Ambulatory Surgery - Diagnosis, Procedure, and External Cause Codes
type: Dataset
description: This dataset contains statewide counts for every diagnosis, procedure, and external cause of injury/morbidity code reported on the ambulatory surgery data. Diagnosis codes are reported using ICD-9-CM or ICD-10-CM. Procedure codes are reported using CPT-4. External cause of injury/morbidity codes are reported using ICD-9-CM or ICD-10-CM. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
keyword: ambulatory-surgery
keyword: amerigeo
keyword: amerigeoss
keyword: as
keyword: asc
keyword: ckan
keyword: cpt-4
keyword: current-procedural-terminology
keyword: department-of-health-care-access-and-information
keyword: diagnosis-code
keyword: external-cause
keyword: frequencies
keyword: geo
keyword: geoss
keyword: hcai
keyword: hospital
keyword: icd-10
keyword: icd-9
keyword: injury
keyword: international-classification-of-diseases
keyword: morbidity
keyword: national
keyword: north-america
keyword: procedure-code
keyword: united-states
issued: 2018-03-15T20:01:23.208618
modified: 2022-04-22T16:00:54.722775
theme: {"Health and Human Services"}
contact point: Organization
  fn: Department of Health Care Access and Information, Healthcare Analytics Branch

US Migrating
type: Agent

2020 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/f6e6bf74-a969-4ae4-8a88-bbea7cd990cf/download/2020_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499558
modified: 2025-11-20T21:32:58.669159

2020 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 24 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/81707837-ebbf-4fea-bcc1-9c14783436d1/download/2020_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499569
modified: 2025-11-20T21:32:58.669569

2019 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. Up to 12 external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/7e914076-865b-4835-acb9-e0d3a9690c91/download/2020_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499575
modified: 2025-11-20T21:32:58.669972

2019 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/eb261dbb-700c-4586-8ce7-db8c5598d98b/download/2019_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499580
modified: 2025-11-20T21:32:58.670356

2019 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/cef41fc2-a722-434b-ba85-ee6fb57ebea9/download/2019_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499585
modified: 2025-11-20T21:32:58.670750

2019 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/10beee2f-b40a-47a4-87e1-d96d2e05a3f0/download/2019_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499590
modified: 2025-11-20T21:32:58.671143

2018 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/11da89d3-ba37-4b7b-b3b4-6a993ca28edb/download/2018_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499594
modified: 2025-11-20T21:32:58.671532

2018 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/4dfbc5f2-509a-4ba3-9fa2-787ae9e90573/download/2018_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499599
modified: 2025-11-20T21:32:58.671910

2018 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/1e3f983c-82a5-421e-9d84-91fa8bc2220b/download/2018_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499604
modified: 2025-11-20T21:32:58.672274

2017 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/d811ce7b-9c34-4c42-b7d1-3e38ce995606/download/2017diagnosiscodefrequenciesas.xlsx
issued: 2022-06-23T00:48:44.499609
modified: 2025-11-20T21:32:58.672650

2017 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/21bc90e0-184d-42bb-81fb-a85fceb22884/download/2017procedurecodefrequenciesasrev.xlsx
issued: 2022-06-23T00:48:44.499614
modified: 2025-11-20T21:32:58.673035

2017 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/6bfd0db6-6038-4db6-9abc-3b60b03db11d/download/2017extcausecodefrequenciesas.xlsx
issued: 2022-06-23T00:48:44.499618
modified: 2025-11-20T21:32:58.673408

2016 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/ca84dce7-b635-45e0-823c-2b8938562546/download/2016diagnosiscodefrequenciesas.xlsx
issued: 2022-06-23T00:48:44.499623
modified: 2025-11-20T21:32:58.673773

2016 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/ff12a1b1-3586-4230-ab3a-a643b7e48998/download/2016procedurecodefrequenciesas.xlsx
issued: 2022-06-23T00:48:44.499628
modified: 2025-11-20T21:32:58.674132

2016 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/b8bbfc86-4855-4f49-9d71-756d6e8941ed/download/2016extcausecodefrequenciesas.xlsx
issued: 2022-06-23T00:48:44.499633
modified: 2025-11-20T21:32:58.674489

2015 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/9c4fe89c-bc87-436e-a801-7f1754f4d5c1/download/2015-diagnosis-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499637
modified: 2025-11-20T21:32:58.674961

2015 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/8efe1b76-d72b-4015-a562-11518115289b/download/2015-procedure-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499642
modified: 2025-11-20T21:32:58.675358

2015 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/b107a1e4-193f-4197-9a08-2587a0e07e2a/download/2015-e-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499647
modified: 2025-11-20T21:32:58.675744

2014 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/fa76f5d8-effd-482a-abd3-ab178a5f31fc/download/2014-diagnosis-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499652
modified: 2025-11-20T21:32:58.676113

2014 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/0242c812-15cd-4497-b1b7-635c0726a6c5/download/2014-procedure-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499656
modified: 2025-11-20T21:32:58.676480

2014 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/76b6146e-d902-4683-8616-75fc8fdbea00/download/2014-e-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499662
modified: 2025-11-20T21:32:58.676836

2013 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/fda251b0-a182-47d4-922c-2d572e23493c/download/2013-diagnosis-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499666
modified: 2025-11-20T21:32:58.677201

2013 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/001896bf-ea7a-4243-8860-f0b46557a21b/download/2013-procedure-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499671
modified: 2025-11-20T21:32:58.677555

2013 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/2296c890-c7ed-41b4-b753-8d25ea136252/download/2013-e-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499676
modified: 2025-11-20T21:32:58.677971

2012 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/68401542-9c78-4a74-a374-8311376fa896/download/2012-diagnosis-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499681
modified: 2025-11-20T21:32:58.678347

2012 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/3ccee86f-bd4d-4e9d-8dba-12aefeffc470/download/2012-procedure-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499685
modified: 2025-11-20T21:32:58.678719

2012 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/94f87b92-abc3-4c8f-a499-8a1e8b77ee5b/download/2012-e-code-frequencies-as.xlsx
issued: 2022-06-23T00:48:44.499690
modified: 2025-11-20T21:32:58.679089

All resource data
type: Distribution
description: ambulatory-surgery-diagnosis-procedure-and-external-cause-codes-i_wrze.zip
media type: application/zip
format: ZIP
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/cea1271b-a62f-43c5-871d-ab9d178c620f/download/ambulatory-surgery-diagnosis-procedure-and-external-cause-codes-i_wrze.zip
issued: 2022-06-23T00:48:44.499695
modified: 2025-11-20T21:32:58.679442

2011 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/ed7c82f2-678e-4555-9d92-2fecb0daab22/download/2011_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499700
modified: 2025-11-20T21:32:58.679786

2011 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/f935462e-b4e1-4ca7-bc40-51d2c93b5500/download/2011_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499704
modified: 2025-11-20T21:32:58.680141

2011 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/181f8c4b-1fb4-43d6-8736-9b8d712e66f2/download/2011_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499709
modified: 2025-11-20T21:32:58.680519

2010 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/12f42bc1-f7fb-4134-b787-8103c5926f63/download/2010_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499714
modified: 2025-11-20T21:32:58.680886

2010 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/fc75ecce-46b1-48ed-a8c9-ba823ba2b8ab/download/2010_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499719
modified: 2025-11-20T21:32:58.681241

2010 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/6cf5cd36-b393-440a-a000-eb4f900ac1ee/download/2010_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499724
modified: 2025-11-20T21:32:58.681597

2009 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/8a85d653-07f6-4a0c-99e5-d608a11ee27e/download/2009_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499728
modified: 2025-11-20T21:32:58.681948

2009 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/31be6edd-9d1e-4ab9-8c29-77b4a7aa9e00/download/2009_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499733
modified: 2025-11-20T21:32:58.682311

2009 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/22d0706b-df93-4db9-93ed-4b400525ced1/download/2009_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499738
modified: 2025-11-20T21:32:58.682693

2008 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/80ffc9f6-9e2e-4112-b76b-c91441529a64/download/2008_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499743
modified: 2025-11-20T21:32:58.683092

2008 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/ad088ae6-f71c-4bc2-9783-a7f10f7b3b58/download/2008_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499748
modified: 2025-11-20T21:32:58.683465

2008 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/3a94f776-91e6-4cc9-baf1-80f8ff9ec360/download/2008_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499752
modified: 2025-11-20T21:32:58.683830

2007 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/4f3d82d1-fac7-4598-9eaa-4e0396673059/download/2007_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499757
modified: 2025-11-20T21:32:58.684214

2007 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/db4821cd-0040-4165-98f8-0c146553a284/download/2007_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499762
modified: 2025-11-20T21:32:58.684591

2007 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/164cb941-8cf6-4859-8def-83473f100990/download/2007_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499766
modified: 2025-11-20T21:32:58.684956

2006 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/05e80524-6a5e-4cd8-a27e-4771f081dcc3/download/2006_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499771
modified: 2025-11-20T21:32:58.685318

2006 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/43c18e73-5643-4ebc-997d-6109db187c0f/download/2006_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499776
modified: 2025-11-20T21:32:58.685685

2006 Ambulatory Surgery - External Cause of Injury/Morbidity Code Frequency
type: Distribution
description: This data table contains statewide counts for every external cause of injury/morbidity code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to four external cause of injury/morbidity codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/78af15cf-0554-44c4-baae-152f0fc302f5/download/2006_extcausecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499781
modified: 2025-11-20T21:32:58.686055

2005 Ambulatory Surgery - Diagnosis Code Frequency
type: Distribution
description: This data table contains statewide counts for every diagnosis code (ICD-9-CM or ICD-10-CM) reported on the ambulatory surgery data. A principal and up to 24 secondary diagnosis codes may be reported on each ambulatory surgery record. ICD-10 replaced ICD-9, effective October 1, 2015. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/aabe1576-9b0f-4555-acb0-844d6378e9cb/download/2005_diagnosiscodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499785
modified: 2025-11-20T21:32:58.686452

2005 Ambulatory Surgery - Procedure Code Frequency
type: Distribution
description: This data table contains statewide counts for every procedure code (CPT-4) reported on the ambulatory surgery data. A principal and up to 20 secondary procedure codes may be reported on each ambulatory surgery record. Note: Physician-owned ambulatory surgery clinics do not report their data to HCAI and, therefore, are not included in the statewide frequencies.
media type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
format: XLS
access URL: https://data.chhs.ca.gov/dataset/d84f8a92-24e2-401d-b789-6e208c264aea/resource/f0cab890-9481-4c1c-b301-b5a7282ec959/download/2005_procedurecodefrequencies_as.xlsx
issued: 2022-06-23T00:48:44.499790
modified: 2025-11-20T21:32:58.686847