Hospital Case Mix Data Specification Manuals

The Hospital Case Mix Data Specification Manuals provide information on the data file format, data specifications, data element definitions, and quality standards that data submitters must follow when submitting Case Mix files to CHIA.

• Both the Final and Redline versions of the FY2021 Hospital Case Mix Data Specifications for Hospital Inpatient Discharge Data (HIDD), Hospital Emergency Department, and Hospital Outpatient Observation are available below.

• Other documentation including Hospital Case Mix Data Specifications, Transfer Organization ID listings, and Payer Sources Codes are also available for reference.

FY2021 Hospital FINAL Case Mix Data Specifications

• Final Hospital Inpatient Discharge Data Specifications (PDF) | Word
  - Effective November 1, 2020 with updated submittal schedule information.

• Final Hospital Emergency Department Data Specifications (PDF) | Word

• Final Hospital Outpatient Observation Data Specifications (PDF) | Word

• Final Payer Type and Payer Source Codes (Excel)
  (Updated February 2, 2024)

FY2021 Hospital Redline Case Mix Data Specifications

• Redline Hospital Inpatient Discharge Data Specifications (PDF) | Word

• Redline Hospital Emergency Department Data Specifications (PDF) | Word

• Redline Hospital Outpatient Observation Data Specifications (PDF) | Word

• Redline Payer Type and Payer Source Codes (Excel)

Associated Case Mix Documentation for the Hospital Case Mix Data Specifications

• Transfer Organization ID (ORG ID) List (Excel)
  (Updated January 2024)

• Payer Type and Payer Source Codes (Excel)
  (Includes all information from FY21- FY24)