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Eligibility dates and the right payer · Last verified 2026-08-30

CARC 270 denial code on dental claims

Independent publisher · Drafted with AI assistance, verified against primary sources · Credentialed review pending

CARC 270 is the “Medical says file dental” code on a dental remittance. Correct it and resubmit inside the filing window; this is not an appeal.

Group code: X12 places no group-code restriction on 270. A group code always travels with a CARC, and it — not the CARC — assigns financial responsibility, so read the one on your remittance rather than assuming.

Registry entry: X12 Claim Adjustment Reason Code 270 — active, with no deactivation date. Read on the list published 2025-11-01.

Verdict

Technical — fix and resubmit

The route here is correcting the identified defect and resubmitting as a corrected claim, inside the timely-filing window, rather than arguing the decision.

Not a coverage decision to contest — a routing instruction. File with the dental plan, in dental format, inside its window.

The appealability verdicts on these pages are Dentovio's editorial classification. No standards body or payer publishes an appealability taxonomy: X12 defines what a code means, not what to do about it. Each verdict is built from the code's own mechanics and the payer and federal documents cited on the page, and it is a starting point for triage rather than a prediction of any outcome.

What it means in dental

The medical plan has the claim, has no benefit for it, and is telling the practice to file the services with the patient's dental plan.

The mirror image of 254, and the code an office meets when a medical cross-claim comes back. It completes the crossover picture: 254 sends you from dental to medical, 270 sends you from medical to dental, 290 means the dental plan already forwarded it, and 289 means neither side covers it.

What to do

  1. 1.File the services with the patient's dental plan in the dental claim format
  2. 2.Attach whatever the dental plan's policy requires for the procedure; medical documentation rarely matches it
  3. 3.Diary the dental plan's filing deadline separately from the medical one

Remark codes verified with this CARC

No source read for this page pairs a remark code with CARC 270. X12 defines no CARC-to-RARC pairings at all: payer crosswalks are specific to that payer's own internal reason codes, and the CAQH CORE combination list binds only payers operating inside its business scenarios. Read the remark code on your own remittance.

Read with this code

Sources

Last verified 2026-08-30. Dentovio is an independent publisher — not a payer, the ADA, X12, CAQH CORE, or any government agency. Code meanings and remark-code meanings on this page are Dentovio's own wording, written from the official X12 Claim Adjustment Reason Code and Remittance Advice Remark Code lists and linked back to them; X12 holds the copyright in those lists and its descriptions are not reproduced here. CDT codes are referenced by number only; CDT is the American Dental Association's copyrighted code set and this page does not reproduce ADA descriptors. Appealability verdicts are Dentovio editorial classification, not a standard. Every fact traces to the code steward's registry, a federal rule or manual, a HIPAA operating rule, an association publication, or a named payer's own document — never to a billing blog. This page was drafted with AI assistance and verified against the primary sources linked here. It has not been reviewed by a credentialed dental billing specialist, attorney, or clinician. Educational billing reference only — not billing, legal, or clinical advice. Plan contracts control individual outcomes, and processing policies usually live in the payer's provider manual rather than in the signed agreement. How this data is verified