Z40.81 ICD-10-CM Code: Encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Factors influencing health status and contact with health services (Z00-Z99) / Encounters for other specific health care (Z40-Z53)
Z40.81
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceEncounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors
A visit for preventive ovary removal surgery in patients without known genetic mutations or family history of cancer.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
Official- Encounter for prophylactic oophorectomy for persons without known genetic/ familial risk factors
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Z40.81 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Z40.81 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for Z40.81 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Z40.81 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Z40.81 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Z40.81 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is Z40.81 an HCC code?
No. Z40.81 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Z40.81 is the ICD-10-CM diagnosis code for encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors. A visit for preventive ovary removal surgery in patients without known genetic mutations or family history of cancer. Z40.81 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering encounters for other specific health care (z40-z53).
Z40.81 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
This code is used when prophylactic oophorectomy is performed for other reasons (e.g., personal preference, menopausal symptoms) without genetic risk.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z40.81 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is used when prophylactic oophorectomy is performed for other reasons (e.g., personal preference, menopausal symptoms) without genetic risk
- •Do not use if BRCA or other hereditary cancer syndrome is documented; use Z40.02 instead