Updated research request forms and data security approval requirement effective 4/24/23
This variable identifies the coding system (ICD-9 or ICD-10) used for the Diagnosis Codes 1 through 12 (DGNS_CD_1-12 fields).
If the discharge date is prior to October 1, 2015, the diagnosis code flag (and corresponding diagnosis code) should be ICD-9. Beginning October 1, 2015, the diagnosis code/flag should be ICD-10.
SOURCE: T-MSIS Analytic File (TAF) Claims
|Null/missing||source value is missing, unknown, or not on the valid value list or within the range of valid values|