Updated research request forms and data security approval requirement effective 4/24/23
DATE ON WHICH THE PRINCIPAL PROCEDURE, IF ANY, WAS PERFORMED.
SOURCE: MSIS CLAIMS FILE: 'PROC-DATE-PRINCIPAL'. MSIS DATES WITH 8- OR 9-FILL VALUES ARE CHANGED TO 0-FILL (ZERO-FILL).
SOURCE: MSIS CLAIMS FILE: 'PROC-DATE-PRINCIPAL'. MSIS DATES WITH 8- OR 9-FILL VALUES ARE CHANGED TO 0-FILL (ZERO-FILL).