Z79.81
Long term (current) use of agents affecting estrogen receptors and estrogen levels
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 3 never code together
Z79code
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 16
Z79.81code
Code first
Use additional code
- code, if applicable, to identify:
- estrogen receptor positive status (Z17.0)Z17.0
- family history of breast cancer (Z80.3)Z80.3
- genetic susceptibility to malignant neoplasm (cancer) (Z15.0-)Z15.0-
- personal history of breast cancer (Z85.3)Z85.3
- personal history of prostate cancer (Z85.46)Z85.46
- postmenopausal status (Z78.0)Z78.0
Z79code
Includes
- long term (current) drug use for prophylactic purposes
Code also
- any therapeutic drug level monitoring (Z51.81)Z51.81
Z00-Z99chapter
Notes
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:Z00-Z99A00-Y89
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 5 same parent — Z79.8
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.