TAF Pharmacy File

The Medicaid and CHIP TAF (T-MSIS Analytic File) Pharmacy (RX) file includes records of filled prescriptions. 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)

Special considerations

  • Encounter data reporting may vary by state, year and eligibility group.
  • Information on the drug name, dosage and format is not recorded in the TAF RX file. An external source of NDC data will be required if that information is needed.
  • 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