CARC 261: The procedure or service is inconsistent with the patient's history.
The procedure or service is inconsistent with the patient's history.
CARC 261 is the code your insurance company used to explain why your claim was reduced, denied, or paid less than expected. It appears on your Explanation of Benefits (EOB) — the statement your plan sends after a claim is processed. Here's what it means for you and what you can do about it.
What CARC 261 means
The official X12 description is: “The procedure or service is inconsistent with the patient's history.”
In plain language: The procedure or service is inconsistent with the patient's history.
What to do next 261
Appeal with documentation specific to this code. The provider's billing office can help clarify what the carrier wants.
DenialHelp helps organize a source-linked draft from the denial notice and confirmed case facts. The patient and treating clinician must verify the governing review rule, current payer policy, clinical sources, attachments, destination, and deadline.
CARC 261 group codes explained
On the 835 ERA, CARC 261 appears alongside a group code that signals who is financially responsible for the adjustment. CO (Contractual Obligation) — Contractual write-off. The provider agreed to the rate. Patient does NOT owe this amount.
Frequently asked questions
What does CARC 261 mean?
The procedure or service is inconsistent with the patient's history. In plain language: The procedure or service is inconsistent with the patient's history.
Is CARC 261 appealable?
Yes — CARC 261 is one of the codes that commonly supports an appeal. Appeal with documentation specific to this code. The provider's billing office can help clarify what the carrier wants.
Which group code does CARC 261 appear under?
CARC 261 most often appears under: CO (Contractual Obligation) — Contractual write-off. The provider agreed to the rate. Patient does NOT owe this amount.
How do I appeal a CARC 261 denial?
Appeal with documentation specific to this code. The provider's billing office can help clarify what the carrier wants.
Related resources
Sources
Appeal a CARC 261 denial
Upload the denial notice. DenialHelp helps verify the reason, organize source-linked evidence, and prepare a treating-clinician-reviewable appeal package. Current pricing and refund terms are shown before payment.
Get started →Contact: hello@denialhelp.com