TAF Inpatient File

The Medicaid and CHIP TAF (T-MSIS Analytic File) Inpatient (IP) file contains records for enrollees who had an inpatient hospital stay. Records include fee-for-service (FFS) claims, managed care encounters and supplemental payments for Medicaid, Medicaid-expansion CHIP and separate CHIP.

What does this file include? (variable highlights)

  • Records included based on discharge date within the file calendar year
  • Active, non-voided, non-denied final action claims
  • Diagnosis codes
  • Present on Admission Indicator
  • Procedure codes
  • Procedure date
  • Discharge status
  • Charges and payments
  • Provider identifier

Special considerations

  • Available encounter data may vary by state, year and eligibility group.
  • For resources on Medicaid TAF data quality, click here.

Availability of this file

CY 2014-2018
CY 2019 Preliminary

For calendar years 2014 and 2015, the CMS Medicaid research files will be in either the MAX or TAF format depending on when the state transitioned to T-MSIS data submissions. 

Please see the state and year availability table: 

For earlier versions of Medicaid data, please refer to the MAX data file page.

See what is in this file