CARC 133: The disposition of the claim/service is pending further review.
The disposition of the claim/service is pending further review.
CARC 133 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 133 means
The official X12 description is: “The disposition of the claim/service is pending further review.”
In plain language: The disposition of the claim/service is pending further review.
What to do next 133
Verify the EOB details. If you believe the code is misapplied, contact the carrier's member services or your provider's billing office.
CARC 133 group codes explained
On the 835 ERA, CARC 133 appears alongside a group code that signals who is financially responsible for the adjustment. OA (Other Adjustment) — Informational or coordination-related adjustment. Usually means another payer is involved or there's a non-claim-related accounting entry.
Frequently asked questions
What does CARC 133 mean?
The disposition of the claim/service is pending further review. In plain language: The disposition of the claim/service is pending further review.
Is CARC 133 appealable?
CARC 133 is usually not appealable on its own — it's typically a contractual, informational, or routine adjustment. Verify the EOB details. If you believe the code is misapplied, contact the carrier's member services or your provider's billing office.
Which group code does CARC 133 appear under?
CARC 133 most often appears under: OA (Other Adjustment) — Informational or coordination-related adjustment. Usually means another payer is involved or there's a non-claim-related accounting entry.
What should I do if I see CARC 133 on the 835?
Verify the EOB details. If you believe the code is misapplied, contact the carrier's member services or your provider's billing office.
Related resources
Sources
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