Description
Our Parts A & B files have the following data on the health services provided to each Medicare enrollee during a calendar year:
To organize this information, CMS groups these data into seven service categories or "settings"–namely, Carrier (PB), Durable Medical Equipment (DM), Home Health (HH), Hospice (HS), Inpatient (IP), Outpatient (OP), and Skilled Nursing Facility (SN).
Variables Summary
The table below lists variable categories for and some key variables in Parts A & B data. For a comprehensive list of variables, review the Parts A & B data dictionary.
Costs
Beneficiary Payment Amount, Claim Payment Amount, Medicare Coinsurance Amount, Medicare Copay Amount, Provider Payment Amount
Dates
Claim From Date, Claim Processing Dates (e.g., Claim Receipt Date), Claim Through Date, Stay From Date, Stay Through Date
Demographics
Age, Beneficiary Identification Number, Gender, Race
Diagnoses
Claim Diagnosis Codes (including International Classification of Diseases (ICD)-9 and ICD-10), Claim Diagnosis Version Code, Principal Diagnosis Code
Drugs
Revenue Center National Drug Codes (NDCs)
Procedures, Services & Treatments
Claim Procedure Codes, Healthcare Common Procedure Coding System (HCPCS) Codes, HCPCS Modifiers, Revenue Center Codes based on Common Procedure Terminology (CPT)
Processing
Claim Check Indicator, Claim Total Line Count, Claim Total Segment Count, Line Duplicate, Line Service Count, National Claims History (NCH) Processing Dates, NCH Record Version Code
Provider
Facility Type, Physician Specialty Code
Years Available
1991 - 2021
File Update Frequency
Data Dictionary Link
Visit the Data Documentation PageNIA Data Partners Offering Parts A & B
CE, HABC, HRS, LLFS, NLTCS, NSHAP, PT, PSAD, PSID, RADC, WLS
NIA Data Partners Not Offering Parts A & B
BLSA, NHAS, NHATS, UAS, UFOVT
Additional Resources
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