DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

E32 Diseases of thymus

  • Header · not billable

E32 is not billable. The category heads 4 billable codes in FY2027: the 4 codes directly below it.

Index → code

Where it sits

  1. Chapter 4 Endocrine, nutritional and metabolic diseases (E00-E89)
  2. E20-E35 Disorders of other endocrine glands (E20-E35)
  3. E32 Diseases of thymus
Billable codes
4
Subdivisions
4
CC / MCC codes
1 / 0
HCC V28 codes
0
New FY2027
0
Index entries
32

Codes in E32

  1. E32.0
    Persistent hyperplasia of thymus
    Billable
    Inclusion terms 1

    Inclusion terms

    • Hypertrophy of thymus
  2. E32.1
    Abscess of thymus
    BillableCC
  3. E32.8
    Other diseases of thymus
    Billable
    Excludes1 2

    Excludes1

    • aplasia or hypoplasia with immunodeficiency (D82.1) D82.1
    • thymoma (D15.0) D15.0
  4. E32.9
    Disease of thymus, unspecified
    Billable

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At E32

Excludes1

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

Notes that also apply

Block E20-E35 instructions (Excludes1 2): printed on the block page.

Chapter 4 instructions (Notes 1, Excludes1 1): printed on the chapter 4 page.

Index entries

  • Kopp's asthma → E32.8
  • Lymphatism → E32.8
  • Thymitis → E32.8
  • Enlargement, enlargedthymus (gland) (congenital) → E32.0
  • Failure, failedinvolution, thymus (gland) → E32.0
  • Hyperplasia, hyperplasticthymus (gland) (persistent) → E32.0
  • Hypertrophy, hypertrophicthymic, thymus (gland) (congenital) → E32.0
  • Persistence, persistent (congenital)thymus (gland) (hyperplasia) → E32.0
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)thymus (gland) → E32.1
  • Suppuration, suppurativethymus (gland) → E32.1
  • Asthma, asthmatic (bronchial) (catarrh) (spasmodic)Kopp's → E32.8
  • Asthma, asthmatic (bronchial) (catarrh) (spasmodic)thymic → E32.8
  • Atrophy, atrophic (of)fatty, thymus (gland) → E32.8
  • Atrophy, atrophic (of)thymus (fatty) → E32.8
  • Convulsions (idiopathic)thymic → E32.8
  • Cyst (colloid) (mucous) (simple) (retention)thymus (gland) → E32.8
  • Degeneration, degenerativethymus (gland) → E32.8
  • Emphysema (atrophic) (bullous) (chronic) (interlobular) (lung) (obstructive) (pulmonary) (senile) (vesicular)thymus (gland) (congenital) → E32.8
  • Fibrosis, fibroticthymus (gland) → E32.8
  • Hemorrhage, hemorrhagic (concealed)thymus (gland) → E32.8
  • Infiltrate, infiltrationthymus (gland) (fatty) → E32.8
  • Inflammation, inflamed, inflammatory (with exudation)thymus (gland) → E32.8
  • Involution, involutionalthymus failure → E32.8
  • Necrosis, necrotic (ischemic)thymus (gland) → E32.8
  • Status (post)lymphaticus → E32.8
  • Status (post)thymicolymphaticus → E32.8
  • Status (post)thymicus → E32.8
  • Status (post)thymolymphaticus → E32.8
  • Disease, diseasedthymus (gland) → E32.9
  • Dysfunctionthymus → E32.9
  • Degeneration, degenerativethymus (gland)fatty → E32.8
  • Disease, diseasedthymus (gland)specified NEC → E32.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy