E29.1 Testicular hypofunction

The ICD-10-CM code for Testicular hypofunction is E29.1 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

4: Endocrine, nutritional and metabolic diseases (E00-E89)

Section

E20-E35: Disorders of other endocrine glands (E20-E35)

Category E29

5 codes (4 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E29.1:

• Panhypogonadism
• Eunuchoidism
• Failure, failed › testicular endocrine function
• Abnormal, abnormality, abnormalities › biosynthesis, testicular androgen
• Failure, failed › seminiferous tubule, adult
• Failure, failed › Leydig's cell, adult
• Defect, defective › biosynthesis, androgen (testicular)
• Deficiency, deficient › 5-alpha reductase (with male pseudohermaphroditism)

Inclusion Terms

• Defective biosynthesis of testicular androgen NOS
• 5-delta-Reductase deficiency (with male pseudohermaphroditism)
• Testicular hypogonadism NOS

U.S. Hospital Utilization

• An estimated 19,135 U.S. inpatient stays in 2023 included E29.1 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)