ICD-10 Code E28 – Ovarian Dysfunction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E28 – Ovarian dysfunction
What it is
E28 identifies disorders of ovarian function, including conditions where the ovaries do not work normally. It is a broad category, so you should use the documentation to determine the specific ovarian issue.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include menstrual irregularity, absent ovulation, infertility, or signs of hormone imbalance, but the exact presentation depends on the underlying disorder.
When to use this code
Use E28 when the provider documents ovarian dysfunction without naming a more specific diagnosis. It also applies when the record describes impaired ovarian activity, such as ovulatory dysfunction or ovarian insufficiency, and no narrower code is documented. Check documentation for the exact condition.
Do not use for
Do not use E28 for conditions with a more specific ICD-10 code, such as clearly documented ovarian cysts, tumors, or congenital anomalies. If the chart names a specific disorder, code that condition instead.
Coding tip
Review the provider’s wording carefully and code the most specific ovarian diagnosis supported by the record.