CARC 150: Payer deems the information submitted does not support this level of service
Your insurer decided the documentation doesn't justify the complexity (and cost) of the service that was billed — often called 'downcoding.'
What this means for your claim
Evaluation and management visits are billed at levels (for example, a level 4 vs. level 3 office visit). If the insurer believes the records don't support the higher level, they reduce payment to a lower level. This affects how much of the bill is your responsibility.
What to do next
- 1
Request an itemized bill and ask your provider which service level was billed and which the insurer paid.
- 2
Ask your provider to submit the visit documentation supporting the level billed and to appeal the downcoding if warranted.
- 3
Verify that your patient responsibility was recalculated against the correct allowed amount after any adjustment.
How to handle a contractual-obligation adjustment
Contractual Obligation (CO) codes describe the part of a claim that is governed by the contract between your insurer and the provider. In most cases the adjustment itself is legitimate — it reflects the agreed network discount, your deductible, your coinsurance, or your copay. The money you should focus on is the patient-responsibility line, because that is the amount you can actually verify, dispute, or have reprocessed.
Confirm the math against your plan documents
Pull your Summary of Benefits and Coverage and your member-portal accumulators. Check that the allowed amount matches the in-network contracted rate and that your deductible, coinsurance, or copay was applied at the correct stage. A surprising number of patient-responsibility errors come from accumulators that didn't update after a prior claim.
Check whether your out-of-pocket maximum was reached
Once you hit your annual out-of-pocket maximum, your coinsurance and copays for covered, in-network services should drop to $0. If an EOB still shows patient responsibility after you've met that limit, call member services and ask for the claim to be reprocessed against your accumulator.
Make sure the service was coded the way it actually happened
A visit coded as a higher-complexity level, or a preventive screening miscoded as a diagnostic (sick) visit, can shift cost onto you. Request an itemized bill, compare the CPT codes to what you actually received, and ask the provider's billing office to correct and rebill any mismatch before you pay.
Your appeal rights for CARC 150
If you believe a contractual adjustment was applied incorrectly — wrong network status, wrong accumulator, or a coding error — start with the provider's billing office for coding issues and your insurer's member services for benefit-application issues. If they disagree, you have the right under the Affordable Care Act to a formal internal appeal, and if that's denied, an independent external review.
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