Reference data for healthcare AI
A catalog of healthcare reference data — coding systems, provider registries, and payer policies — searchable by dataset and file, with on-demand download.
25 files across 15 sources. Click any group to expand individual files for on-demand download.
Claim Adjustment Reason Codes (CARC)
Standardized reason codes for claim adjustments used on 835 remittance advice
FDA National Drug Code Directory
Universal product identifier for drugs in the United States
HCC V24 Risk Adjustment
Hierarchical Condition Categories V24 model mappings
HCPCS Level II Code Set
Healthcare Common Procedure Coding System Level II codes
ICD-10-CM Code Set
International Classification of Diseases 10th Revision Clinical Modification
Local Coverage Determinations (LCD)
Medicare LCD policy seed data extracted from CMS Medicare Coverage Database
Medically Unlikely Edits (Full)
Complete MUE limits file (all codes)
MS-DRG Grouper
ICD-10 MS-DRG grouper tables (FY 2027 NPRM test version)
NCCI Edits (Full)
Complete NCCI PTP edits -- outpatient
NCCI Medically Unlikely Edits (MUE)
Maximum units of service for a single HCPCS/CPT code on a single date of service
NCCI PTP Edits - Hospital OPPS
CMS NCCI Procedure-to-Procedure edits for hospital outpatient services (quarterly additions/deletions/revisions)
NCCI PTP Edits - Practitioner
CMS NCCI Procedure-to-Procedure edits for practitioner services (quarterly additions/deletions/revisions)
OPPS Addendum B
OPPS payment rates by HCPCS code for CY 2026
Place of Service Codes
CMS place of service codes for professional claims
Remittance Advice Remark Codes (RARC)
Supplemental remark codes used on 835 remittance advice