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ICD-10-CM 2027

ICD-10 code for ovary dysfunction

E28.9

Ovarian dysfunction, unspecified

✓ Billable / specificFemale only

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

About coding ovary dysfunction

The ICD-10-CM code for ovary dysfunction is E28.9 (Ovarian dysfunction, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on E28.9.

Within E28, choose E28.9 (unspecified) only when documentation doesn't support a more specific option: estrogen excess (E28.0), androgen excess (E28.1), polycystic ovarian syndrome (E28.2), primary ovarian failure (E28.3) and other ovarian dysfunction (E28.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 742 (Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC, relative weight 1.8456), DRG 743 (Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC, relative weight 1.2974), DRG 760 (Menstrual and Other Female Reproductive System Disorders with CC/MCC, relative weight 1.0129) and DRG 761 (Menstrual and Other Female Reproductive System Disorders without CC/MCC, relative weight 0.7041), in MDC 13 (Diseases and Disorders of the Female Reproductive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

More specific ovary dysfunction codes (official index)

  • specified NEC E28.8 — Other ovarian dysfunction

Common questions about ovary dysfunction ICD-10 codes

What is the ICD-10 code for ovary dysfunction?

E28.9 — Ovarian dysfunction, unspecified. More specific codes apply when the documentation supports them: E28.8.

Is E28.9 billable?

Yes. E28.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can E28.9 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict E28.9 as a principal diagnosis.

Is E28.9 a CC or MCC?

No. E28.9 is neither a CC nor an MCC under MS-DRG v44.0.