Z17.420
Billable codeHormone receptor negative with human epidermal growth factor receptor 2 positive status
The ICD-10 code for hormone receptor negative with human epidermal growth factor receptor 2 positive status is Z17.420.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- HR- with HER2+
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Z17.421Hormone receptor negative with human epidermal growth factor receptor 2 negative status
- Z17.420Hormone receptor negative with human epidermal growth factor receptor 2 positive status
Associated MS-DRGs
Z17.420 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.