Day: April 24, 2026

IMPORTANT: Two Common Misconceptions About CO4 Misconception 1: Conifer Health describes CO4 as a service “excluded from the patient’s plan coverage.” This is factually wrong. Misconception 2: SPRY PT describes CO4 as a “duplicate claim.” This is also factually wrong. CO4 is not a coverage exclusion denial. It is not…

This guide covers the CO-252 denial code as defined by X12 and used in US healthcare claims processing under HIPAA. Australian Medicare uses a separate code numbered 252 to classify possible post-operative aftercare services — that code and this code share only a number, not a meaning. Every section of…

According to X12, the official body that maintains Claim Adjustment Reason Codes, CARC 109 is defined as: “Claim/service not covered by this payer/contractor. You must send the claim/service to the correct payer/contractor.” In plain terms, the co 109 denial code means the claim you submitted landed at a payer that…