Z17.3Header code — not billable
Human epidermal growth factor 2 receptor
- Chapter
- 21. Factors influencing health status and contact with health services
- Category
- Z17
- Effective date
- October 1, 2026
Related codes in category Z17
Z17Estrogen, and other hormones and factors receptor statusZ17.0Estrogen receptor positive status [ER+]YesZ17.1Estrogen receptor negative status [ER-]YesZ17.2Progesterone receptor statusZ17.21Progesterone receptor positive statusYesZ17.22Progesterone receptor negative statusYesZ17.31Human epidermal growth factor receptor 2 positive statusYesZ17.32Human epidermal growth factor receptor 2 negative statusYesZ17.4Combined receptor statusZ17.41Hormone receptor positiveZ17.410Hormone recept pos w hmn epdrml grth fctr recept 2 pos statYesZ17.411Hormone recept pos w hmn epdrml grth fctr recept 2 neg statYes
Frequently asked questions
What is ICD-10 code Z17.3?
Z17.3 is an ICD-10-CM diagnosis code for Human epidermal growth factor 2 receptor.
Is Z17.3 a billable code?
No. Z17.3 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is Z17.3 in?
Z17.3 falls under Chapter 21: Factors influencing health status and contact with health services.
When did Z17.3 become effective?
Z17.3 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Z17.3?
Z17.3 belongs to category Z17, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.