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N242 Remark Code: Incomplete Radiology Films or Images

N242 means the radiology films or images sent to the payer were incomplete or invalid. The payer received imaging, but it was missing required views, could not be opened or viewed, or did not match the patient or date on the claim.

Quick facts

Code
N242 (RARC N242)
Status
Active In use since August 1, 2004; last modified July 1, 2008.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The service was denied or held because the images could not support it. The provider sends usable images; the patient is not liable.
Official description
Incomplete/invalid radiology film(s)/image(s).
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What N242 means

Some payers want to see the images themselves, not just a written interpretation. That is common in dental claims and in some surgical or specialty reviews. N242 says the images arrived but could not be used, usually alongside CARC 252.

Where N240 concerns the written report, N242 is about the pictures.

Why images get rejected

  • Missing views. A single image was sent when the payer requires specific views or a full series.
  • Format problems. Files were in a format the payer’s system cannot open, or were compressed until details were lost.
  • Labelling. Images lack the patient’s name, date, or orientation markers such as left and right.
  • Timing. The images predate the service by more than the payer allows, or were taken after treatment when pre-treatment images were required.
  • Quality. Exposure or positioning makes the relevant area impossible to evaluate.

How to fix it

  1. Find out what the payer found wrong; the remittance alone may not say, so check any letter or call.
  2. Export the correct images at full diagnostic quality in the format the payer supports, making sure each is labelled and dated.
  3. Include all required views and a copy of the report if helpful.
  4. Upload or send them with the claim reference and request reconsideration if the claim was denied.

How to prevent it

Keep a payer-by-payer list of image requirements for the procedures you perform most, and set your imaging software to export in accepted formats with patient labels embedded.

Codes that may appear with N242

  • CO-252 (An attachment/other documentation is required to adjudicate this claim/service.): Documentation, the images, is required to adjudicate the claim.
  • CO-50 (These are non-covered services because this is not deemed a 'medical necessity' by the payer.): The payer could not confirm medical necessity without adequate images.
  • N40 (Missing radiology film(s)/image(s).): Radiology films or images were missing entirely.
  • N240 (Incomplete/invalid radiology report.): The written radiology report was incomplete or invalid.
  • N244 (Incomplete/Invalid pre-operative images/visual field results.): Pre-operative images or visual field results were incomplete or invalid.

N242 FAQ

Which claims need images, not just reports?

Payers sometimes ask for images for dental procedures, certain surgical approvals, and reviews where they want to see the findings themselves. Requirements vary by payer and service.

What format should digital images be in?

Use the format the payer specifies. Some want standard image files through a portal, while others accept medical imaging files. Unsupported formats can make images unreadable.

Are dental X-rays covered by N242?

They can be. Dental payers commonly request radiographs to support procedures such as crowns and periodontal treatment.