CO-151 Denial Code: Complete Description, Causes, and Resolution Guide [2026]
The official Claim Adjustment Reason Code (CARC) 151 definition, per X12, reads: “Payment adjusted because the payer deems the information submitted does not support this many/frequency of services.” That’s the technical version. Here’s what it means in practice: you billed a service more times than your documentation can justify, and…
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