2026 ICD-10-CM Diagnosis Code K59.81Ogilvie syndrome

ICD-10-CM Codes›K00–K95›K55-K64›K59

ICD-10-CM K59.81
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K59.81 is a billable ICD-10-CM diagnosis code for ogilvie syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 391 through 392. Coders also document this condition as chronic intestinal pseudo-obstruction. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified gastrointestinal disorders.

Code Identity

ICD-10-CM Code
K59.81
Billable Status
Yes — Valid for Submission
Code Describes
Ogilvie syndrome
Short Description
Ogilvie syndrome
Same as the full description in the CMS dataset.
Parent Code
K59.8
Other specified functional intestinal disorders

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK59Other functional intestinal disorders
This CodeK59.81Ogilvie syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chronic intestinal pseudo-obstruction
  • Chronic pseudo-obstruction of colon
  • Primary chronic pseudo-obstruction of colon
  • Primary chronic pseudo-obstruction of gastrointestinal tract
  • Primary chronic pseudo-obstruction of large intestine
  • Pseudo-obstruction of colon

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Acute colonic pseudo-obstruction (ACPO)

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.

    • ACPO(acute colonic pseudo-obstruction)
    • Pseudo-obstruction intestine(acute) (chronic) (idiopathic) (intermittent secondary) (primary)
      • colonic
    • Syndrome
      • Ogilvie

Clinical ClassificationClinical

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

CCSR DIG025
Other specified and unspecified gastrointestinal disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement K59.81 replaces the following previously assigned code(s):

  • K59.8 - Other specified functional intestinal disorders
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K59.81Overview

Is K59.81 (Other specified functional intestinal disorders) a billable code?

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

What MS-DRG does K59.81 group to?

When ogilvie syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 391, 392, with relative weights from 0.7796 to 1.2683 depending on complications. Higher weights mean higher Medicare reimbursement.

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.