DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

E23 Hypofunction and other disorders of the pituitary gland

  • Header · not billable

E23 is not billable. The category heads 6 billable codes in FY2027: the 6 codes directly below it.

Index → code

  • Dyspituitarism → E23.3
  • Panhypopituitarism → E23.0
  • Fröhlich's syndrome → E23.6

Where it sits

  1. Chapter 4 Endocrine, nutritional and metabolic diseases (E00-E89)
  2. E20-E35 Disorders of other endocrine glands (E20-E35)
  3. E23 Hypofunction and other disorders of the pituitary gland
Billable codes
6
Subdivisions
6
CC / MCC codes
2 / 0
HCC V28 codes
0
New FY2027
0
Index entries
87

Codes in E23

  1. E23.0
    Hypopituitarism
    BillableCC
    Inclusion terms 15, Use additional code 1

    Inclusion terms

    • Fertile eunuch syndrome
    • Hypogonadotropic hypogonadism
    • Idiopathic growth hormone deficiency
    • Isolated deficiency of gonadotropin
    • Isolated deficiency of growth hormone
    • Isolated deficiency of pituitary hormone
    • Kallmann's syndrome
    • Lorain-Levi short stature
    • Necrosis of pituitary gland (postpartum)
    • Panhypopituitarism
    • Pituitary cachexia
    • Pituitary insufficiency NOS
    • Pituitary short stature
    • Sheehan's syndrome
    • Simmonds' disease

    Use additional code

    • code, if applicable, for associated cachexia (E88.A) E88.A
  2. E23.1
    Drug-induced hypopituitarism
    Billable
    Use additional code 1

    Use additional code

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) T36 T50
  3. E23.2
    Diabetes insipidus
    BillableCC
    Excludes1 1

    Excludes1

    • nephrogenic diabetes insipidus (N25.1) N25.1
  4. E23.3
    Hypothalamic dysfunction, not elsewhere classified
    Billable
    Excludes1 2

    Excludes1

    • Prader-Willi syndrome (Q87.11) Q87.11
    • Russell-Silver syndrome (Q87.19) Q87.19
  5. E23.6
    Other disorders of pituitary gland
    Billable
    Inclusion terms 2

    Inclusion terms

    • Abscess of pituitary
    • Adiposogenital dystrophy
  6. E23.7
    Disorder of pituitary gland, 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 E23

Includes

  • the listed conditions whether the disorder is in the pituitary or the hypothalamus

Excludes1

  • postprocedural hypopituitarism (E89.3) E89.3
  • short stature due to endocrine disorder (E34.3-) E34.3

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

  • Ahumada-del Castillo syndrome → E23.0
  • Fertile eunuch syndrome → E23.0
  • Hypopituitarism (juvenile) → E23.0
  • Kallmann's syndrome → E23.0
  • Lorain (-Levi) short stature syndrome → E23.0
  • Panhypopituitarism → E23.0
  • Sheehan's disease or syndrome → E23.0
  • Simmonds' cachexia or disease → E23.0
  • Dyspituitarism → E23.3
  • Renon-Delille syndrome → E23.3
  • Adiposogenital dystrophy → E23.6
  • Fröhlich's syndrome → E23.6
  • Brissaud'sinfantilism or dwarfism → E23.0
  • Cachexiahypophyseal → E23.0
  • Cachexiahypopituitary → E23.0
  • Cachexiapituitary → E23.0
  • CachexiaSimmonds' → E23.0
  • Deficiency, deficientgonadotropin (isolated) → E23.0
  • Deficiency, deficientgrowth hormone (idiopathic) (isolated) → E23.0
  • Deficiency, deficientpituitary hormone (isolated) → E23.0
  • Dwarfismhypophyseal → E23.0
  • DwarfismLorain (-Levi) type → E23.0
  • Dwarfismpituitary → E23.0
  • Eunuchoidismhypogonadotropic → E23.0
  • Hypoadrenocorticismpituitary → E23.0
  • Hypofunctionpituitary (gland) (anterior) → E23.0
  • Hypogonadismhypogonadotropic → E23.0
  • Hypogonadismpituitary → E23.0
  • Hypophyseal, hypophysisdwarfism → E23.0
  • HyposecretionACTH → E23.0
  • Infancy, infantile, infantilismLorain → E23.0
  • Infancy, infantile, infantilismpituitary → E23.0
  • Insufficiency, insufficientpituitary → E23.0
  • Necrosis, necrotic (ischemic)pituitary (gland) → E23.0
  • Panhypopituitarismprepubertal → E23.0
  • Syndromefertile eunuch → E23.0
  • Syndromehypopituitarism → E23.0
  • Syndromeinfantilism (pituitary) → E23.0
  • Syndromepostpartum panhypopituitary (Sheehan) → E23.0
  • Hypopituitarism (juvenile)drug-induced → E23.1

47 more, longer entries are not listed; the search box finds them by word.

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

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