Cardiology medical billing suffers from high denial rates due to the strict bundling rules of the National Correct Coding Initiative (NCCI), absolute medical necessity tracking, and precise component matching. Procedures and Claim Adjustment Reason Codes (CARC) 1. Echocardiography: CPT 93306 The Denial Code: CO-16 (Claim/service lacks information) or CO-50 (Not medically necessary). The Root Cause: […]