ICD-10-CM › C00-D49 › C50 › C50.2 Malignant neoplasm of upper-inner... › C50.21

C50.21

Malignant neoplasm of upper-inner quadrant of breast, female

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 3 more specific codes instead:

  • C50.211 Malignant neoplasm of upper-inner quadrant of right female breast
  • C50.212 Malignant neoplasm of upper-inner quadrant of left female breast
  • C50.219 Malignant neoplasm of upper-inner quadrant of unspecified female breast

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 upper-inner quadrant of breast, female

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 C50 Malignant neoplasm of breast

Excludes1 - never coded here

  • skin of breast (C44.501, C44.511, C44.521, C44.591)

Use additional code

  • code to identify estrogen, and other hormones and factors receptor status (Z17.-)

Includes

  • connective tissue of breast
  • Paget's disease of breast
  • Paget's disease of nipple

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
C50.22 Malignant neoplasm of upper-inner quadrant of breast, male Not billable