Z17.31
BillableHuman epidermal growth factor receptor 2 positive status
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A status code indicating that cancer cells tested positive for HER2 (human epidermal growth factor receptor 2), which indicates a more aggressive cancer type.
Coding Tips
- •Document this code when HER2 testing results are positive and confirmed
- •HER2-positive status qualifies patients for targeted therapies like trastuzumab (Herceptin)
Code Hierarchy
└Z17Estrogen, and other hormones and factors receptor status└Z17.3Human epidermal growth factor 2 receptor└Z17.31Human epidermal growth factor receptor 2 positive status
└Z17.31Human epidermal growth factor receptor 2 positive status