2026 ICD-10-CM Diagnosis Code E28Ovarian dysfunction

ICD-10-CM Codes›E00–E89›E20-E35›E28

ICD-10-CM E28
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E28 is a non-billable ICD-10-CM category code for ovarian dysfunction, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E28.0, E28.1, E28.2, and E28.310.

Code Identity

ICD-10-CM Code
E28
Billable Status
No — Non-Billable Category
Code Describes
Ovarian dysfunction
Chapter
E20-E35
Disorders of other endocrine glands

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE20-E35Disorders of other endocrine glands
CategoryE28Ovarian dysfunction
This CodeE28Ovarian dysfunction

Specific Coding for Ovarian dysfunctionOverview

Non-specific codes like E28 require more characters. Use one of these billable codes instead:

  • Use E28.0 for Estrogen excess

  • Use E28.1 for Androgen excess

  • Use E28.2 for Polycystic ovarian syndrome

  • E28.3 for Primary ovarian failure

  • E28.31 for Premature menopause

  • Use E28.39 for Other primary ovarian failure

  • Use E28.8 for Other ovarian dysfunction

  • Use E28.9 for Ovarian dysfunction, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

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

Patient EducationClinical

Ovarian Disorders

The ovaries are a pair of female reproductive glands that make eggs and female hormones. Women have one ovary on each side of the uterus (where a fetus grows during pregnancy). Each ovary is about the size and shape of an almond.

The full article covers:

  • What are ovaries?
  • What are the types of ovarian disorders?
  • What causes ovarian disorders?
  • What are the symptoms of ovarian disorders?
  • How are ovarian disorders diagnosed?
  • What are the treatments for ovarian disorders?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E28Overview

Is E28 (Ovarian dysfunction) a billable code?

No. This is a category header that groups the codes for ovarian dysfunction, and headers cannot be submitted on claims. Claims for ovarian dysfunction need a more specific code from this category, such as E28.0, E28.1, and E28.2.