Denial code

CARC 236 denial code: meaning & whether to appeal

CARC 236: the exact X12 wording, how it is classified, and whether it is worth appealing.

Appealant EditorialX12 verified3 min read

What CARC 236 means

This procedure or procedure/modifier combination is not compatible with another procedure or procedure/modifier combination provided on the same day according to the National Correct Coding Initiative or workers compensation state regulations/ fee schedule requirements.

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

Classification

Denial class: bundling / coding edits

Appealability verdict

Appealable — bundling / coding edits

What to know

These turn on the payer's own edit rules: the NCCI Policy Manual and modifier indicators often support separate payment as billed. The appeal argues the edit was misapplied — no code changes are involved.

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