N822: Missing procedure modifier(s)
The claim line requires a modifier that was not included at all. This is different from N823, which covers a modifier that was present but wrong.
Corrective actions
- 1
Identify which modifier is required
Cross-reference the procedure code against CPT/HCPCS modifier guidance and the payer's specific modifier requirements to determine the missing modifier.
- 2
Add the modifier and resubmit
Append the correct modifier supported by the documentation and resubmit as a corrected claim.
Usually paired with
Retrieved 2026-07-18.
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DenialPath provides billing and administrative guidance based on published CMS and X12 sources. It is not medical advice, not a coverage determination, and not a guarantee of payment. NCCI and MUE edits are republished quarterly and payer policies vary by contract. Always confirm against the payer's own current policy before submitting or appealing.