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N482 Remark Code: Models Incomplete or Invalid

N482 means the payer received models to support the claim but they were incomplete or invalid, so the reviewer could not evaluate the service. You will need to send complete, identifiable, usable models before the claim can be decided.

Quick facts

Code
N482 (RARC N482)
Status
Active In use since July 1, 2008; last modified March 14, 2014.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The adjustment stems from deficient supporting records. The provider should resend usable models rather than bill the patient.
Official description
Incomplete/invalid Models.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N482 means

The models arrived, but they did not do the job. N482 is the incomplete-or-invalid counterpart to N481. It usually sits beside CARC 251 (attachment deficient) and tells you the problem lies in the physical or digital models themselves, not in the claim form.

Because the official text does not specify a clinical area, check the service line it appears on. Dental plans send it most often, but the same logic applies to any service a payer reviews using casts or scans.

Where submissions go wrong

  • Missing parts. One component of a set, such as an opposing arch, was left out.
  • Damage in transit. Casts arrived cracked or crushed.
  • Unreadable files. A scan was exported in a format the payer cannot open or was corrupted during upload.
  • No link to the claim. The package carried no patient name, member ID, or claim reference.
  • Mismatch. The models relate to a different date, patient, or treatment than the claim.

How to fix it

  1. Ask what was wrong if the EOB or portal message does not say. The fix for a labeling issue is very different from the fix for damaged casts.
  2. Repair, re-export, or remake the models as needed.
  3. Resubmit through the payer’s attachment channel, citing the original claim number, with a short list of what is enclosed.
  4. Confirm the payer logged the new submission and set a follow-up date.
  5. Appeal if appropriate. If the original submission was complete, request reconsideration with proof of what you sent.

How to prevent it

Use sturdy packaging, label every piece, test digital exports before upload, and keep a record of each submission. A simple sign-off by a second staff member before models go out catches most of these problems.

Codes that may appear with N482

  • CO-251 (The attachment/other documentation that was received was incomplete or deficient.): The attachment was received but incomplete or deficient.
  • CO-16 (Claim/service lacks information or has submission/billing error(s).): Some payers use this general missing-or-invalid-information reason with N482.
  • CO-250 (The attachment/other documentation that was received was the incorrect attachment/document.): The payer received something, but not the attachment it expected.
  • N481 (Missing Models.): The payer never received models at all.
  • N478 (Incomplete/invalid Dental Models.): The dental-specific wording for incomplete or invalid models.
  • N206 (The supporting documentation does not match the information sent on the claim.): The supporting documentation does not match the information on the claim.

N482 FAQ

Why would models be considered invalid?

They may be broken, missing a component, unreadable as digital files, unlabeled, or they may not correspond to the patient or service on the claim.

Should I send a new claim with the models?

Usually no. Send the corrected models referencing the existing claim, or submit a corrected claim if the payer requires one. A brand new claim for the same service may be denied as a duplicate.

Can I appeal instead of resending?

If you believe the models you sent were complete and valid, you can ask for reconsideration and explain why. Include proof of what was submitted.