HL7 2.4 - Identifier Type Codeset - HL7 0203

# HL7 Version CodeValue Description
 1 2.4 BR Birth registry number
 2 2.4 MA Medicaid number
 3 2.4 MC Medicare number
 4 2.4 MR Medical record number
 5 2.4 SR State registry ID
 6 2.4 SS Social Security number