Market intelligence
Billing rules, payer resources, and official updates
Public reference material organized by topic. Each entry links to the publisher, so you read the original, not a summary.
- Billing referenceCMS
National Correct Coding Initiative (NCCI) Edits
Quarterly procedure-to-procedure and medically unlikely edits used by Medicare and most commercial payers to deny unbundled claims.
- Billing referenceX12
X12 837P Professional Claim Implementation Guide Reference
Where to find the HIPAA-adopted 005010X222A1 implementation guide and CMS companion guides for electronic professional claims.