ICD-10 Code E29.0 – Testicular hyperfunction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E29.0 – Testicular hyperfunction
What it is
E29.0 identifies testicular hyperfunction, meaning the testes are producing too much hormone activity. Use it when documentation clearly states excess testicular function or androgen overproduction.
Clinical signs
Clinical features may include signs of androgen excess, such as early virilization or other hormone-related changes. Clinical features vary; refer to documentation.
When to use this code
Use E29.0 when the provider documents testicular hyperfunction, hyperactivity, or overproduction of testicular hormones. It may also fit endocrine evaluations that specifically identify excess testicular function. Check documentation if the note only describes symptoms without a confirmed diagnosis.
Do not use for
Do not use this code for nonspecific testicular pain, infertility, or general endocrine complaints without documented hyperfunction. If the record does not confirm excess testicular activity, check documentation.
Coding tip
Code E29.0 only when the provider clearly links the condition to testicular overfunction, not merely suspected hormonal imbalance.