2026 ICD-10-CM Diagnosis Code E89.6Postprocedural adrenocortical (-medullary) hypofunction

ICD-10-CM Codes›E00–E89›E89›E89

ICD-10-CM E89.6
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E89.6 is a billable ICD-10-CM diagnosis code for postprocedural adrenocortical (-medullary) hypofunction. 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 adrenocortical hypofunction following procedure. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative endocrine or metabolic complication.

Code Identity

ICD-10-CM Code
E89.6
Billable Status
Yes — Valid for Submission
Code Describes
Postprocedural adrenocortical (-medullary) hypofunction
Short Description
Postprocedural adrenocortical (-medullary) hypofunction
Same as the full description in the CMS dataset.
Parent Code
E89
Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE89Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified
CategoryE89Postprocedural endocrine and metabolic complications and disorders, not elsewhere classified
This CodeE89.6Postprocedural adrenocortical (-medullary) hypofunction

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adrenocortical hypofunction following procedure
  • History of adrenalectomy
  • History of excision of endocrine gland
  • Post-adrenalectomy adrenal insufficiency

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.

    • Absence(of) (organ or part) (complete or partial)
      • adrenal (gland) (congenital)
        • acquired
    • Complication(s) (from) (of)
      • endocrine
        • postprocedural
          • adrenal hypofunction
    • Hypofunction
      • adrenocortical
        • postprocedural
    • Hypofunction
      • adrenomedullary, postprocedural
    • Status(post)
      • adrenalectomy (unilateral) (bilateral)

Clinical ClassificationClinical

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

CCSR END014
Postprocedural or postoperative endocrine or metabolic complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Adrenal Gland Disorders

Your adrenal glands are two small organs that sit on top of each kidney. The adrenal glands make different types of hormones you need to stay alive and healthy. Hormones are chemicals that travel in your bloodstream and control how different parts of your body work.

The full article covers:

  • What are adrenal glands?
  • What are adrenal gland disorders?
  • What causes adrenal gland disorders?
  • How are adrenal gland disorders diagnosed?
  • What are the treatments for adrenal gland disorders?

Read the full article at MedlinePlus

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

Convert E89.6 to ICD-9-CMHistory

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

ICD-9-CM
255.41 Glucocorticoid deficient
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 E89.6Overview

Is E89.6 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report postprocedural adrenocortical (-medullary) hypofunction on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does E89.6 group to?

When postprocedural adrenocortical (-medullary) hypofunction 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 E89.6?

Under the General Equivalence Mappings, postprocedural adrenocortical (-medullary) hypofunction converts to ICD-9-CM 255.41 (glucocorticoid deficient). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.