2026 ICD-10-CM Diagnosis Code E29.0Testicular hyperfunction

ICD-10-CM Codes›E00–E89›E20-E35›E29

ICD-10-CM E29.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E29.0 is a billable ICD-10-CM diagnosis code for testicular hyperfunction. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 643 through 645. Coders also document this condition as gonadotropin independent precocious puberty. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified endocrine disorders.

Code Identity

ICD-10-CM Code
E29.0
Billable Status
Yes — Valid for Submission
Code Describes
Testicular hyperfunction
Short Description
Testicular hyperfunction
Same as the full description in the CMS dataset.
Parent Code
E29
Testicular dysfunction

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE20-E35Disorders of other endocrine glands
CategoryE29Testicular dysfunction
This CodeE29.0Testicular hyperfunction

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Gonadotropin independent precocious puberty
  • Hypergonadism
  • Peripheral precocious puberty due to testicular hyperfunction
  • Testicular hyperfunction

Tabular List NotesGuidance

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

Inclusion Terms

  • Hypersecretion of testicular hormones

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Hyperfunction
      • testicular
    • Hypergonadism
      • testicular (primary) (infantile)
    • Hypersecretion
      • androgen (testicular)
    • Hypersecretion
      • hormone (s)
        • testicular
    • Puberty(development state)
      • precocious (constitutional) (cryptogenic) (idiopathic)
        • due to
          • testicular hyperfunction

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR END015
Other specified and unspecified endocrine disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Testicular Disorders

Testicles, or testes, make male hormones and sperm. They are two egg-shaped organs inside the scrotum, the loose sac of skin behind the penis. It's easy to injure your testicles because they are not protected by bones or muscles. Men and boys should wear athletic supporters when they play sports.

Read the full article at MedlinePlus

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

Convert E29.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
257.0 Testicular hyperfunction
Exact Match The mapping is direct, with no qualifiers.

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 E29.0Overview

Is E29.0 (Testicular dysfunction) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report testicular hyperfunction on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does E29.0 group to?

When testicular hyperfunction is the principal diagnosis on an inpatient stay, it groups to MS-DRG 643, 644, 645, with relative weights from 0.7683 to 1.6461 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of E29.0?

Under the General Equivalence Mappings, testicular hyperfunction converts to ICD-9-CM 257.0 (testicular hyperfunction). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.