Z17.1
BillableEstrogen receptor negative status [ER-]
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A breast cancer tumor that does not have receptors for estrogen, meaning it does not grow in response to estrogen.
Coding Tips
- •ER- tumors typically require different treatment approaches than ER+ tumors, often involving chemotherapy rather than hormone therapy
- •Always code with the primary breast cancer diagnosis code for complete clinical documentation
Code Hierarchy
└Z17Estrogen, and other hormones and factors receptor status└Z17.1Estrogen receptor negative status [ER-]
└Z17.1Estrogen receptor negative status [ER-]