Resources
AR workflow resources — denial guides, the decoder, code references and payer tools. Every item here is a real, published resource; nothing is a placeholder.
Tools & reference
Denial Decoder
Enter a CARC/RARC combination from an ERA/EOB and get a practical AR workflow.
Claim Check
Validate CPT and ICD-10 codes before you bill — NCCI/CCI edits and laterality included.
Coding Validator
Pure CPT/ICD-10 validation without denial context.
CARC Lookup
Claim Adjustment Reason Codes — official descriptions plus AR Guide guidance.
RARC Lookup
Remittance Advice Remark Codes — supplemental and informational remarks.
Group Codes
CO / PR / OA / PI — the claim adjustment group codes.
Payer Contacts
Find the right payer contact number by payer, state, LOB and contact type.
BCBS Prefix Lookup
Enter the first 3 characters of a BCBS member ID to identify the likely entity.
State Directory
Browse payers and BCBS entities operating in each US state.
Denial Pattern Library
Educational articles on the denial patterns AR teams see most — and how to prevent them upfront.
Appeal Letter Templates
Downloadable Word templates for common denials — timely filing, eligibility, medical necessity and more.
AR Billing Glossary
Plain-English definitions of CARC, RARC, ERA, EOB and the other acronyms AR staff meet daily.
About & Methodology
Who built AR Guide and how codes, workflows and payer contacts are verified.