Z79.81 — Long term (current) use of agents affecting estrogen receptors and estrogen levels
Is Z79.81 billable?
No — Z79.81 is a non-billable header code. Z79.81 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath Z79.81.
Z79.81 at a glance
| Code | Z79.81 |
|---|---|
| Description | Long term (current) use of agents affecting estrogen receptors and estrogen levels |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with Z79.81 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- hormone replacement therapy (Z79.890)
Code first
The underlying condition below must be sequenced before Z79.81. Z79.81 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code
Report an additional code alongside Z79.81 to fully describe the condition. Z79.81 is sequenced first.
Excludes2 — not included here — inherited from Z79
The conditions below are not part of Z79.81, but a patient may have both at the same time. When documentation supports it, Z79.81 and the excluded code may both be reported.
Code also — inherited from Z77-Z99
Two codes may be needed to describe the condition fully. Whether Z79.81 is sequenced first depends on the reason for the encounter.
- any follow-up examination (Z08-Z09)
Code also — inherited from Z79
Two codes may be needed to describe the condition fully. Whether Z79.81 is sequenced first depends on the reason for the encounter.
- any therapeutic drug level monitoring (Z51.81)
What codes fall under Z79.81? (3)
How long has Z79.81 existed?
Z79.81 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.