2026 ICD-10-CM Diagnosis Code E32Diseases of thymus

ICD-10-CM Codes›E00–E89›E20-E35›E32

ICD-10-CM E32
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E32 is a non-billable ICD-10-CM category code for diseases of thymus, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E32.0, E32.1, E32.8, and E32.9.

Code Identity

ICD-10-CM Code
E32
Billable Status
No — Non-Billable Category
Code Describes
Diseases of thymus
Chapter
E20-E35
Disorders of other endocrine glands

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE20-E35Disorders of other endocrine glands
CategoryE32Diseases of thymus
This CodeE32Diseases of thymus

Specific Coding for Diseases of thymusOverview

Non-specific codes like E32 require more characters. Use one of these billable codes instead:

  • Use E32.0 for Persistent hyperplasia of thymus

  • Use E32.1 for Abscess of thymus

  • Use E32.8 for Other diseases of thymus

  • Use E32.9 for Disease of thymus, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • aplasia or hypoplasia of thymus with immunodeficiency D82.1
  • myasthenia gravis G70.0

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E32Overview

Is E32 (Diseases of thymus) a billable code?

No. This is a category header that groups the codes for diseases of thymus, and headers cannot be submitted on claims. Claims for diseases of thymus need a more specific code from this category, such as E32.0, E32.1, and E32.8.