2027 ICD-10-CM Diagnosis Code E28.8Other ovarian dysfunction
ICD-10-CM Codes›E00–E89›E20-E35›E28
- Billable — Valid for Submission
- Chronic Condition
E28.8 is a billable ICD-10-CM diagnosis code for other ovarian dysfunction. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 742 through 743, 760 through 761. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified endocrine disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Amenorrhea due to disorder of ovary
- Cycling ovulatory disorder
- Diminished ovarian reserve
- Diminished ovarian reserve due to increased follicle-stimulating hormone and estradiol
- Diminished ovarian reserve due to poor follicle-stimulating hormone response
- Endocrine menstrual disturbance
- Hypergonadism
- Hypergonadotropic amenorrhea
- Hyperhormonal amenorrhea
- Hypersecretion of ovarian progesterone
- Ovarian hyperfunction
- Ovarian hypersecretion
- Ovarian hyperthecosis
- Ovarian masculinization syndrome
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to E28.8: its own notes plus those printed at E28, block E20-E35, and Chapter 4. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Ovarian hyperfunction NOS
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- postprocedural ovarian failure (E89.4-)
Notes
General instructions on how these codes are used.
- All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name E28.8, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming E28.8: they are not reported together with it, unless the two conditions are unrelated.
Code First 1
These codes say to code first a condition named in the note, and E28.8 is one of the conditions named.
- G63 Polyneuropathy in diseases classified elsewhere
Notes 1
These notes mention E28.8.
- Chapter 4 (E00-E89) Endocrine, nutritional and metabolic diseasesAll neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere. names E16-E31, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
hyperhormonal E28.8
specified NEC E28.8
ovarian E28.8
ovarian E28.8
Hyperovarism E28.8
Hyperthecosis ovary E28.8
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Convert E28.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About E28.8Overview
What is the ICD-10 code for other ovarian dysfunction?
The ICD-10-CM code for other ovarian dysfunction is E28.8 (sometimes written as E288). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is E28.8 (Ovarian dysfunction) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other ovarian dysfunction on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does E28.8 group to?
When other ovarian dysfunction is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 743, 760, 761, with relative weights from 0.7039 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.
Can E28.8 be reported with a code from E89.4?
Not as a rule. The Excludes1 note on E28.8 lists "postprocedural ovarian failure (E89.4-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of E28.8?
Under the General Equivalence Mappings, other ovarian dysfunction converts to ICD-9-CM 256.8 (ovarian dysfunction NEC). The mapping is a direct match.
