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Z17.31

✓ Billable

Human epidermal growth factor receptor 2 positive status

Factors influencing health status and contact with health services (Z00-Z99)

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Also Known As

HER2+
✅ No additional coding notes for Z17.31

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Code Information

CodeZ17.31
BillableYes
ParentZ17.3
CategoryFactors influencing health status and contact with health services (Z00-Z99)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)