Z17.421
BillableHormone receptor negative with human epidermal growth factor receptor 2 negative status
Z17.421 is the ICD-10-CM code for Hormone receptor negative with human epidermal growth factor receptor 2 negative status. It is a billable, specific code valid for reimbursement.
Z00-Z99 Factors influencing health status and contact with health services
Includes
- •HR- with HER2-
- •TNBC
- •Triple negative breast cancer
Frequently asked questions
- What is ICD-10 code Z17.421?
- Z17.421 is the ICD-10-CM code for "Hormone receptor negative with human epidermal growth factor receptor 2 negative status". It falls under Z00-Z99 Factors influencing health status and contact with health services.
- Is Z17.421 a billable code?
- Yes — Z17.421 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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