`E29.1` Testicular hypofunction

Billable ICD-10-CM code, FY2026.

Applicable to

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

Excludes1 (never code together)

postprocedural testicular hypofunction (E89.5)

Use additional code

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Applies from E29 Testicular dysfunction

Excludes1 (never code together)

androgen insensitivity syndrome (E34.5-)
azoospermia or oligospermia NOS (N46.0-N46.1)
isolated gonadotropin deficiency (E23.0)
Klinefelter's syndrome (Q98.0-Q98.1, Q98.4)

MS-DRG index

Defines the logic of DRG(s) 643-645 in MDC 10.

Approximate ICD-9-CM (GEMs)

257.2 Other testicular hypofunction

Code annotations containing back-references to E29.1

Back-references to E29

Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")

Diagnosis Index entries for E29.1

Abnormal, abnormality, abnormalities › biosynthesis, testicular androgen
Defect, defective › biosynthesis, androgen (testicular)
Deficiency, deficient › 5-alpha reductase (with male pseudohermaphroditism)
Deficiency, deficient › hormone › testicular
Eunuchoidism
Failure, failed › Leydig's cell, adult
Failure, failed › seminiferous tubule, adult
Failure, failed › testicular endocrine function
Hypofunction › testicular
Hypogonadism › male
Hypogonadism › testicular (primary)
Infantile › testis
Insufficiency, insufficient › gonadal › testis
Insufficiency, insufficient › testis
Panhypogonadism
Pseudohermaphroditism › male › with › 5-alpha-reductase deficiency
Syndrome › functional › prepubertal castrate
Undeveloped, undevelopment › testis

Nearby codes

E29 Testicular dysfunction
E29.0 Testicular hyperfunction
E29.1 Testicular hypofunction (this code)
E29.8 Other testicular dysfunction
E29.9 Testicular dysfunction, unspecified