E23 Hypofunction and other disorders of the pituitary gland

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Hypofunction and other disorders of the pituitary gland is E23 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
E20-E35: Disorders of other endocrine glands (E20-E35)
Category E23
7 codes (6 billable)
FY2026 Status
Stable since FY2024
Includes
  • the listed conditions whether the disorder is in the pituitary or the hypothalamus
Excludes1
Not coded here. These conditions should NOT be coded together with E23.
  • postprocedural hypopituitarism (E89.3)
  • short stature due to endocrine disorder (E34.3-)

Official Coding Guidelines

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.4.a
Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.4.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference E23 with the canonical source and edition:

E23 — Hypofunction and other disorders of the pituitary gland. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/E23

Canonical URL: https://icd10codingpro.com/codes/E23

Related Codes

More Specific Codes

E23.0 Hypopituitarism E23.1 Drug-induced hypopituitarism E23.2 Diabetes insipidus E23.3 Hypothalamic dysfunction, not elsewhere classified E23.6 Other disorders of pituitary gland E23.7 Disorder of pituitary gland, unspecified

Related Codes in E23

E23.0 Hypopituitarism E23.1 Drug-induced hypopituitarism E23.2 Diabetes insipidus E23.3 Hypothalamic dysfunction, not elsewhere classified E23.6 Other disorders of pituitary gland E23.7 Disorder of pituitary gland, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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