Z40.0 Encounter for prophylactic surgery for risk factors related to malignant neoplasms
The ICD-10-CM code for Encounter for prophylactic surgery for risk factors related to malignant neoplasms is Z40.0 (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
Inclusion Terms
- Admission for prophylactic organ removal
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).
Malignancy plus prophylactic removal at another site; when not to use Z40.0If the patient has a malignancy of one site and is having prophylactic removal at another site to prevent either a new primary malignancy or metastatic disease, a code for the malignancy should also be assigned in addition to a code from subcategory Z40.0, Encounter for prophylactic surgery for risk factors related to malignant neoplasms. A Z40.0 code should not be assigned if the patient is having organ removal for treatment of a malignancy, such as the removal of the testes for the treatment of prostate cancer.
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026