Z90.721 — Acquired absence of ovaries, unilateral
Z90.721 is a billable, specific ICD-10-CM code for acquired absence of ovaries, unilateral. It is valid for submission on a claim.
Risk adjustment
Z90.721 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
Z90.721 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A57132Billing and Coding: Bone Mass Measurement
- A57132Billing and Coding: Bone Mass Measurement
- A59040Billing and Coding: Bone Mass Measurement
How Z90.721 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Z90.721.
- Absence›ovary›unilateral
- Absence›oviduct›unilateral
- Status›oophorectomy›unilateral
- Status›salpingo-oophorectomy›unilateral
Related codes at this level
Codes that share Z90.72. If Z90.721 is not quite right, the correct code is usually one of these.
Questions about Z90.721
- Is Z90.721 a billable ICD-10-CM code?
- Yes. Z90.721 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does Z90.721 sit in the tabular list?
- Factors influencing health status and contact with health services (Z00-Z99), in the block Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).