Primary code sources
This site uses provider workflow summaries and links to official code-list maintainers for exact code language. CARCs and RARCs are maintained by official industry bodies and updated periodically.
- X12 Claim Adjustment Reason Codes
- X12 Remittance Advice Remark Codes
- CMS Medicare Claims Processing Manual, Chapter 22
- Blue Cross Blue Shield System overview
- BCBS state health plan companies
Source review method
This public static version uses local lookup data with links to official source maintainers. Verify exact CARC/RARC language and plan-specific rules before relying on a workflow.
Important limitation
BCBS companies are independent and locally operated. A denial workflow must still be checked against the specific local Blue plan, product, provider contract, current provider manual, member benefit, and appeal channel.