ICD-10-CM > E00-E89 > E20-E35 > E32 E32 Diseases of thymus Non-Billable/Non-Specific Type 1 Excludes aplasia or hypoplasia of thymus with immunodeficiency (D82.1)myasthenia gravis (G70.0) Codes E32.0Persistent hyperplasia of thymusE32.1Abscess of thymusE32.8Other diseases of thymusE32.9Disease of thymus, unspecified