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N80.109

N80.109Endometriosis of ovary, unspecified side, unspecified depth

Billable / specific codeICD-10-CMunspecified

N80.109 is a billable, specific ICD-10-CM code for endometriosis of ovary, unspecified side, unspecified depth. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Endometriosis of ovary NOS

Risk adjustment

N80.109 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

N80.109 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.

  • A52453Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs
  • A52453Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs

Related codes at this level

Codes that share N80.10. If N80.109 is not quite right, the correct code is usually one of these.

Questions about N80.109

Is N80.109 a billable ICD-10-CM code?
Yes. N80.109 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N80.109 sit in the tabular list?
Diseases of the genitourinary system (N00-N99), in the block Noninflammatory disorders of female genital tract (N80-N98).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.