D27.9 — Benign neoplasm of unspecified ovary
D27.9 is a billable, specific ICD-10-CM code for benign neoplasm of unspecified ovary. It is valid for submission on a claim.
Excludes2 inherited from the categories above D27.9
Also inherited, and the opposite of Excludes1: these conditions are not part of D27.9, but a patient can have both, so you may code both.
Other codes that can never be billed with D27.9
These codes carry an Excludes1 note pointing at D27.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading D27.9 alone.
Risk adjustment
D27.9 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
D27.9 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57788Billing and Coding: Peripheral Nerve Blocks
- A57788Billing and Coding: Peripheral Nerve Blocks
How D27.9 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 D27.9.
- Adenofibroma›endometrioid
- Adenofibroma›unspecified site
- Brenner›tumor(benign)
- Cyst›pseudomucinous(ovary)
- Cystadenofibroma›endometrioid
- Cystadenofibroma›unspecified site
- Tumor›Brenner
- Adenofibroma›mucinous›unspecified site
- Adenofibroma›papillary›unspecified site
- Adenofibroma›serous›unspecified site
- Cyst›ovary, ovarian›dermoid
- Cyst›ovary, ovarian›pseudomucinous
Code history
D27.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share D27. If D27.9 is not quite right, the correct code is usually one of these.
Questions about D27.9
- Is D27.9 a billable ICD-10-CM code?
- Yes. D27.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does D27.9 sit in the tabular list?
- Neoplasms (C00-D49), in the block Benign neoplasms, except benign neuroendocrine tumors (D10-D36).