Z40.8 Encounter for other prophylactic surgery
The ICD-10-CM code for Encounter for other prophylactic surgery is Z40.8 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- Z40-Z53: Encounters for other specific health care (Z40-Z53)
- Category Z40
- 12 codes (9 billable)
- FY2026 Status
- Stable since FY2024
U.S. Hospital Utilization
- An estimated 230 U.S. inpatient stays in 2023 included Z40.8 among the documented diagnoses.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
Prophylactic organ removal—principal/first-listed Z40 codeProphylactic Organ Removal For encounters specifically for prophylactic removal of an organ (such as prophylactic removal of breasts due to a genetic susceptibility to cancer or a family history of cancer), the principal or first-listed code should be a code from subcategory Z40.0, Encounter for prophylactic surgery for risk factors related to malignant neoplasms, or subcategory Z40.8, Encounter for other prophylactic surgery. If applicable, assign additional code(s) to identify any associated risk factor (such as genetic susceptibility or family history).
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.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026