ICD-10-CM 2027
ICD-10 code for Endometrioid cystadenofibroma
From the official ICD-10-CM alphabetic index entry “Cystadenofibroma › endometrioid”. Page updated September 29, 2026.
About coding Endometrioid cystadenofibroma
The ICD-10-CM code for Endometrioid cystadenofibroma is D27.9 (Benign neoplasm of unspecified ovary). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on D27.9.
Within D27, choose D27.9 (unspecified ovary) only when documentation doesn't support a more specific option: right ovary (D27.0) and left ovary (D27.1).
Use an additional code to identify any functional activity.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Endometrioid cystadenofibroma codes (official index)
Common questions about Endometrioid cystadenofibroma ICD-10 codes
What is the ICD-10 code for Endometrioid cystadenofibroma?
- D27.9 — Benign neoplasm of unspecified ovary. More specific codes apply when the documentation supports them: D39.1, C56.
What is the ICD-10 code for borderline malignancy endometrioid cystadenofibroma?
- D39.1 — Neoplasm of uncertain behavior of ovary (header code; choose a more specific subcode).
What is the ICD-10 code for malignant endometrioid cystadenofibroma?
- C56 — Malignant neoplasm of ovary (header code; choose a more specific subcode).
Is D27.9 billable?
- Yes. D27.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D27.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D27.9 as a principal diagnosis.
Is D27.9 a CC or MCC?
- No. D27.9 is neither a CC nor an MCC under MS-DRG v44.0.