2026 ICD-10-CM Diagnosis Code E23.7Disorder of pituitary gland, unspecified

ICD-10-CM Codes›E00–E89›E20-E35›E23

ICD-10-CM E23.7
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E23.7 is a billable ICD-10-CM diagnosis code for disorder of pituitary gland, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 643 through 645. Coders also document this condition as acquired central hypothyroidism. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Pituitary disorders.

Code Identity

ICD-10-CM Code
E23.7
Billable Status
Yes — Valid for Submission
Code Describes
Disorder of pituitary gland, unspecified
Short Description
Disorder of pituitary gland, unspecified
Same as the full description in the CMS dataset.
Parent Code
E23
Hypofunction and other disorders of the pituitary gland

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE20-E35Disorders of other endocrine glands
CategoryE23Hypofunction and other disorders of the pituitary gland
This CodeE23.7Disorder of pituitary gland, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired central hypothyroidism
  • Acquired central hypothyroidism due to pituitary disorder
  • Central hypothyroidism
  • Complex pituitary endocrine disorder
  • Disorder of anterior pituitary
  • Disorder of hypothalamus
  • Disorder of optic chiasm due to pituitary disorder
  • Disorder of pituitary gland
  • Female infertility due to disorder of pituitary gland

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disease, diseased
      • hypophysis
    • Disease, diseased
      • pituitary (gland)
    • Disorder(of)
      • pituitary gland
    • Dysfunction
      • hypophysis
    • Lesion(s) (nontraumatic)
      • hypothalamic

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR END013
Pituitary disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Acquired Central Hypothyroidism

    central hypothyroidism, the cause of which is not present at birth.

Patient EducationClinical

Pituitary Disorders

Your pituitary gland is a pea-sized gland at the base of your brain. The pituitary is the "master control gland" - it makes hormones that affect growth and the functions of other glands in the body.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert E23.7 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
253.9 Pituitary disorder NOS
Approximate The match is approximate rather than exact.

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 E23.7Overview

Is E23.7 (Hypofunction and other disorders of the pituitary gland) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disorder of pituitary gland, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does E23.7 group to?

When disorder of pituitary gland, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 643, 644, 645, with relative weights from 0.7683 to 1.6461 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of E23.7?

Under the General Equivalence Mappings, disorder of pituitary gland, unspecified converts to ICD-9-CM 253.9 (pituitary disorder NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.