ICD-10 Code E32.1 – Abscess of thymus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E32.1 – Abscess of thymus
What it is
E32.1 identifies a localized collection of pus in the thymus. Use this code when documentation specifically states a thymic abscess.
Clinical signs
Clinical features vary; refer to documentation. Typical signs of an abscess may include localized infection findings and imaging or operative confirmation of a thymic collection.
When to use this code
Use E32.1 when the provider documents an abscess involving the thymus, whether found on imaging, during surgery, or in pathology. Code it only when the diagnosis is clearly stated. If the record describes a mediastinal mass, cyst, or infection elsewhere, check documentation.
Do not use for
Do not use this code for thymic enlargement, thymoma, cyst, or nonspecific mediastinal infection without mention of abscess. Check documentation if the anatomic site is unclear.
Coding tip
Confirm that “thymus” and “abscess” appear together in the final provider diagnosis before assigning E32.1.