What Are Claim Adjustment Group Codes (CO, PR, OA & PI)?
October 21, 2026Learn what CO, PR, OA and PI claim adjustment group codes mean, where they appear in the X12 835 CAS segment, and how they affect medical billing.
How to Read an X12 835 ERA: Claim Payments, Adjustments & Denials
October 20, 2026Learn how to read an X12 835 ERA, including CLP, SVC, CAS and RARC information, payment amounts, claim adjustments, denials and remittance balancing.
What Are Remittance Advice Remark Codes (RARCs)?
October 17, 2026Learn what Remittance Advice Remark Codes (RARCs) mean, where they appear in the X12 835, and how to interpret them alongside CARCs and payer information.
What Are Claim Adjustment Reason Codes (CARCs)?
October 17, 2026Learn what Claim Adjustment Reason Codes (CARCs) mean, how they work with group codes and RARCs, and where to find them in X12 835 remittance advice.
Medical Claim Denials: Common Reasons & Solutions
October 13, 2026Learn common medical claim denial reasons, how to read CARC and RARC codes on an 835 ERA, and how to troubleshoot denied claims for Medicare, Medicaid and commercial payers.