E28.9 Ovarian dysfunction, unspecified

Billable ICD-10-CM code, FY2026.

Applies from E28 Ovarian dysfunction

Excludes1 (never code together)

• isolated gonadotropin deficiency (E23.0)
• postprocedural ovarian failure (E89.4-)

MS-DRG index

Defines the logic of DRG(s) 742-743 in MDC 13.

Approximate ICD-9-CM (GEMs)

• 256.9 Unspecified ovarian dysfunction

Code annotations containing back-references to E28.9

Back-references to E28

• Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")
• Type 1 Excludes: N91 Absent, scanty and rare menstruation ("ovarian dysfunction (E28.-)")

Diagnosis Index entries for E28.9

• Dysfunction › ovary

Nearby codes

• E28.31 Premature menopause
• E28.310 Symptomatic premature menopause
• E28.319 Asymptomatic premature menopause
• E28.39 Other primary ovarian failure
• E28.8 Other ovarian dysfunction
• E28.9 Ovarian dysfunction, unspecified (this code)