MCMedicalCodingSoftware
N83.12

N83.12Corpus luteum cyst of left ovary

Billable / specific codeICD-10-CMleft

N83.12 is a billable, specific ICD-10-CM code for corpus luteum cyst of left ovary. It is valid for submission on a claim.

Excludes2 inherited from the categories above N83.12

Also inherited, and the opposite of Excludes1: these conditions are not part of N83.12, but a patient can have both, so you may code both.

Written on N83 Noninflammatory disorders of ovary, fallopian tube and broad ligament

Risk adjustment

N83.12 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

N83.12 is named in 1 Medicare coverage policy 1 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

Code history

N83.12 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 N83.1. If N83.12 is not quite right, the correct code is usually one of these.

Questions about N83.12

Is N83.12 a billable ICD-10-CM code?
Yes. N83.12 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does N83.12 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.