Z79.81 Long term (current) use of agents affecting estrogen receptors and estrogen levels
The ICD-10-CM code for Long term (current) use of agents affecting estrogen receptors and estrogen levels is Z79.81 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- Z77-Z99: Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
- Category Z79
- 41 codes (32 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
Used with any code in range A00.0-T88.9, Z00-Z991) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.
Additional codes with observation code (fragment)observation code, but only if they are unrelated to the suspected condition being observed.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026