ICD-10 Code E32.8 – Other diseases of thymus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E32.8 – Other diseases of thymus
What it is
E32.8 identifies other specified disorders of the thymus gland that are not classified elsewhere. Use it when documentation names a thymus condition but does not fit a more specific ICD-10-CM code.
Clinical signs
Clinical features vary; refer to documentation. Thymus disorders may be found on imaging, associated with mediastinal findings, or noted during evaluation for autoimmune or immune-related conditions.
When to use this code
Use E32.8 when the provider documents a thymus disorder, lesion, or other abnormal thymic condition and no more specific code applies. It is appropriate when the record clearly identifies the thymus as the affected organ. If the note is vague, check documentation before coding.
Do not use for
Do not use this code for thymic hyperplasia, thymic aplasia, or thymoma when a more specific diagnosis is documented. Also avoid it when the finding is incidental and not described as a disease.
Coding tip
Code the most specific thymus diagnosis available, and query the provider if the documentation only says “thymic abnormality.”