ICD-10-CM › C00-D49 › C30-C39 › C codes › C31

C31

Malignant neoplasm of accessory sinuses

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 6 more specific codes instead:

  • C31.0 Malignant neoplasm of maxillary sinus
  • C31.1 Malignant neoplasm of ethmoidal sinus
  • C31.2 Malignant neoplasm of frontal sinus
  • C31.3 Malignant neoplasm of sphenoid sinus
  • C31.8 Malignant neoplasm of overlapping sites of accessory sinuses
  • C31.9 Malignant neoplasm of accessory sinus, unspecified

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2012 Added to the draft code set draft Malignant neoplasm of accessory sinuses

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from the C30-C39 section Malignant neoplasms of respiratory and intrathoracic organs (C30-C39)

Excludes1 - never coded here

  • mesothelioma (C45.-)

Includes

  • malignant neoplasm of middle ear