Z40.8Encounter for other prophylactic surgery

Z40.8 is the ICD-10-CM diagnosis code for encounter for other prophylactic surgery. It belongs to category Z40 (encounter for prophylactic surgery), block Z40-Z53 (Encounters for other specific health care) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within Z40, choose Z40.8 (other prophylactic surgery) only when documentation doesn't support a more specific option: for risk factors related to malignant neoplasms (Z40.0) and unspecified (Z40.9).

To report this condition, pick the subcode that matches the documentation: Z40.81 (factors), Z40.82 (factors) and Z40.89 (surgery).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2026 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as V50.8 (other elective surgery for purposes other than remedying health states).