Appealant

By Appealant Billing & RCM Team · Reviewed by Appealant Billing & RCM Team · Verified against primary sources 2026-07-04

CARC 151 denial code: meaning & whether to appeal (verified)

What CARC 151 means

Payment adjusted because the payer deems the information submitted does not support this many/frequency of services.

Verbatim description from the official X12 Claim Adjustment Reason Codes list.

Classification

Denial class: downcoding

Appealability verdict

Appealable — downcoding

What to know

Appealable when the clinical documentation supports the level billed; the appeal presents the record as billed and asks for reprocessing at that level.