ICD-10-CM › Z00-Z99 › Z17 › Z17.42 Hormone receptor negative › Z17.421

Z17.421

Hormone receptor negative with human epidermal growth factor receptor 2 negative status

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2025 onwards.

What has happened to this code

Every change the publisher made, from 2025 to now.

  1. FY2025 Added to the code set Hormone receptor negative with human epidermal growth factor receptor 2 negative status

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 Z17 Estrogen, and other hormones and factors receptor status

Code first

  • malignant neoplasm, such as:
  • malignant neoplasm of breast (C50.-)
  • malignant neoplasm of ovary (C56.-)

Note

  • Use one code, as available, for each receptor: Z17.0, Z17.1, Z17.2-, Z17.3-

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
Z17.420 Hormone receptor negative with human epidermal growth factor receptor 2 positive status Valid