Z40.02Encounter for prophylactic removal of ovary(s)

Z40.02 is the ICD-10-CM diagnosis code for encounter for prophylactic removal of ovary(s). 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 billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Z40.0 (encounter for prophylactic surgery for risk factors related to malignant neoplasms), Z40.02 is specifically for encounter for prophylactic removal of ovary(s). Related codes cover unspecified organ (Z40.00), breast (Z40.01), fallopian tube(s) (Z40.03) and other organ (Z40.09).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 742 (Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC, relative weight 1.8456), DRG 743 (Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC, relative weight 1.2974), DRG 760 (Menstrual and Other Female Reproductive System Disorders with CC/MCC, relative weight 1.0129) and DRG 761 (Menstrual and Other Female Reproductive System Disorders without CC/MCC, relative weight 0.7041), in MDC 13 (Diseases and Disorders of the Female Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is on the CMS list of diagnoses consistent only with female patients (the sex-conflict edit itself was retired in FY2025).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2018 (title revised).

Before ICD-10, this condition was coded in ICD-9-CM as V50.42 (prophylactic ovary removal).