CMS-21 Form Category of Service for the Paid Claim
T-MSIS Analytic Files (TAF) Claims Research Identifiable Files (RIFs), CCW Codebook, V1, November 2019

01A = Premiums - Up To 150%: Gross Premiums Paid 
01C = Premiums - Over 150%: Gross Premiums Paid 
002 = Inpatient Hospital 
003 = Inpatient Mental Health 
004 = Nursing Care Services 
005 = Physician/Surgical 
006 = Outpatient Hospital 
007 = Outpatient Mental Health 
008 = Prescribed Drugs 
009 = Dental Services 
010 = Vision Services 
011 = Other Practitioners 
012 = Clinic Services 
013 = Therapy Services 
014 = Laboratory/Radiological 
015 = Medical Equipment 
016 = Family Planning 
017 = Other Pregnancy-related Procedures
018 = Screening Services 
019 = Home Health 
020 = Health Services Initiatives 
021 = Home and Community 
022 = Hospice 
023 = Medical Transportation 
024 = Case Management 
025 = Translation and Interpretation 
031 = Other Services 
032 = Outreach 
034 = PERM Administration 
Null/missing = source value is missing or unknown