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Submission / coding error usually correctableDenial Code CARC 16: Claim/service lacks information or has submission/billing error(s)
CARC 16 means: claim/service lacks information or has submission/billing error(s). Here's what it means in plain English, why it happens, and how it's worked toward payment.
CARC 16 — Claim/service lacks information or has submission/billing error(s). Denial family:
Submission / coding error.
Why you get a CARC 16 denial
- A required field was missing or formatted incorrectly (NPI, dates, units, demographics, POS).
- A required attachment or remark element wasn't included.
- CARC 16 always travels with a RARC that names the specific missing element.
How to fix or appeal CARC 16
- Read the accompanying RARC — it identifies exactly what's missing.
- Correct the field or add the required information.
- Resubmit as a corrected claim, which resets the timely-filing clock.
Almost always a corrected-claim fix once the RARC tells you the missing element — not an appeal.
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CARC 16 — FAQ
Why is CARC 16 so common?
It's the catch-all for missing or invalid claim data. The key is the paired RARC code, which specifies the exact element that needs correcting.
Does CARC 16 mean the claim is denied for good?
No — it's a returned/rejected claim for a data issue. Correct the named element and resubmit; it's one of the most recoverable denial types.