When is ICD-10 code E23 used?

Doctors, hospitals, and insurers may use ICD-10 code E23 when recording hypofunction and other disorders of the pituitary gland in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code E23 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code E23: Hypofunction and other disorders of the pituitary gland

Name: ICD-10 Code E23: Hypofunction and other disorders of the pituitary gland
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:05:04.738Z

E23 is an ICD-10 diagnosis entry used to group records related to Hypofunction and other disorders of the pituitary gland. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).

When is it used?

May be used when a clinician documents hypofunction and other disorders of the pituitary gland in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

4Endocrine, nutritional and metabolic diseases (E00-E89)

block

E20-E35Disorders of other endocrine glands

currentE20-E35

Official coding notes

Includes

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

Excludes1 (do not code together)

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

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

EndocrinologistGeneral Physician

Sibling codes

E20Hypoparathyroidism E21Hyperparathyroidism and other disorders of parathyroid gland E22Hyperfunction of pituitary gland E24Cushing's syndrome E25Adrenogenital disorders E26Hyperaldosteronism E27Other disorders of adrenal gland E28Ovarian dysfunction E29Testicular dysfunction E30Disorders of puberty, not elsewhere classified E31Polyglandular dysfunction E32Diseases of thymus E34Other endocrine disorders E35Disorders of endocrine glands in diseases classified elsewherebillable

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

E23

Replacement codes

E23.0 — HypopituitarismE23.1 — Drug-induced hypopituitarismE23.2 — Diabetes insipidusE23.3 — Hypothalamic dysfunction, not elsewhere classifiedE23.6 — Other disorders of pituitary glandE23.7 — Disorder of pituitary gland, unspecified

Common synonyms

Hypofunction and other disorders of the pituitary gland

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.