RARC M119: Missing, Incomplete, Invalid, Deactivated, or Withdrawn National Drug Code
RARC M119 means the National Drug Code (NDC) on the claim is missing, incomplete, invalid, deactivated, or withdrawn — the drug identifier the payer needs to price the item is not usable. It rides with CO-16. The fix is entering the correct active 11-digit NDC with unit qualifier and quantity, then resubmitting.
- Type
- Informational (supplemental)
- Usually paired with
- CO-16
- Fixable?
- Yes — always
- Typical fix
- Add correct active 11-digit NDC with unit qualifier and quantity
What does remark code M119 mean?
Official X12 text: "Missing/incomplete/invalid/deactivated/withdrawn National Drug Code (NDC)." The payer needs a valid, active NDC to identify and price the drug and cannot use the one on the claim. It may be blank, the wrong number of digits, formatted incorrectly, or an NDC that has been deactivated or withdrawn from the market.
ERA mini-example: J1885 (injectable ketorolac) billed $18.00 denies with CO-16 and M119 because the claim carried a 10-digit package NDC instead of the required 11-digit 5-4-2 format. Resubmitted with the leading zero placed in the correct segment plus the unit qualifier and quantity, the line pays.
Which denial code does M119 come with?
Almost always CO-16 — the claim lacks valid information required to process, so it is unprocessable rather than benefit-denied. It often appears alongside M123 when the drug name, strength, or dosage is also missing. Confirm exactly which drug element failed in the denial code lookup before correcting.
How do you fix an M119 denial?
- Pull the NDC from the actual package or vial administered, not a generic reference.
- Convert it to the 11-digit 5-4-2 format by adding a leading zero in the correct segment.
- Confirm the NDC is still active in the FDA directory — replace any deactivated or withdrawn code with the current one.
- Add the NDC unit qualifier and actual quantity administered, tied to the HCPCS units, then resubmit the corrected claim.
How do you prevent M119?
Keep your drug file mapped to current 11-digit NDCs and update it when manufacturers repackage or discontinue products. Capture the NDC from the administered package at the point of care so the billed code matches the lot actually given. Build a scrubber edit that validates NDC format, active status, unit qualifier, and quantity on every drug line before submission, so malformed or deactivated NDCs never reach the payer.
Frequently asked questions
Payers require the 11-digit NDC in 5-4-2 format, and the package NDC on the vial often prints in 10 digits (10-4-1, 5-3-2, etc.). You must add a leading zero in the correct segment to reach 11 digits. A 10-digit NDC, or one padded in the wrong segment, is invalid and triggers M119 even though the drug is real.
NDCs are retired when a product is discontinued or repackaged. If you bill the NDC from an old lot after it was deactivated, the payer rejects it as no longer valid even though you administered a real drug. Use the NDC from the actual package administered, and update your drug file when manufacturers change NDCs.
Yes. A valid NDC alone is often not enough — the payer needs the NDC unit qualifier (F2, GR, ML, UN) and the actual quantity administered, tied to the HCPCS units. A correct NDC with a missing or mismatched unit qualifier still fails, so M119 fixes frequently require correcting the qualifier and quantity, not just the code.
Sources & further reading
Reviewed by the ImmediCare Solutions RCM team
Certified billers and coders handling claims across 50+ specialties nationwide. This entry is reviewed against current payer policy and CMS rules. Last review: Jul 5, 2026.
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