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ICD-10-CM 2027

ICD-10 code for Endometrioma

N80.12

Deep endometriosis of ovary

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Endometrioma”. Page updated September 29, 2026.

About coding Endometrioma

The ICD-10-CM code for Endometrioma is N80.12 (Deep endometriosis of ovary).

Within N80.1 (endometriosis of ovary), N80.12 is specifically for deep endometriosis of ovary. Related codes cover unspecified depth (N80.10) and superficial endometriosis of the ovary (N80.11).

To report this condition, pick the subcode that matches the documentation: N80.121 (ovary), N80.122 (ovary), N80.123 (ovaries) and N80.129 (unspecified ovary).

It was added in FY2023, effective October 1, 2022.

Common questions about Endometrioma ICD-10 codes

What is the ICD-10 code for Endometrioma?

N80.12 — Deep endometriosis of ovary (a header code; report a more specific subcode).

Is N80.12 billable?

No. N80.12 is a header code. Report one of its more specific subcodes instead.