2026 ICD-10-CM Diagnosis Code K56.691Other complete intestinal obstruction

ICD-10-CM Codes›K00–K95›K55-K64›K56

ICD-10-CM K56.691
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K56.691 is a billable ICD-10-CM diagnosis code for other complete intestinal obstruction. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 388 through 390. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Intestinal obstruction and ileus.

Code Identity

ICD-10-CM Code
K56.691
Billable Status
Yes — Valid for Submission
Code Describes
Other complete intestinal obstruction
Short Description
Other complete intestinal obstruction
Same as the full description in the CMS dataset.
Parent Code
K56.69
Other intestinal obstruction

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK56Paralytic ileus and intestinal obstruction without hernia
This CodeK56.691Other complete intestinal obstruction

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.

    • Obstruction, obstructed, obstructive
      • intestine
        • specified NEC
          • complete

Clinical ClassificationClinical

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

CCSR DIG012
Intestinal obstruction and ileus
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Intestinal Obstruction

    any impairment, arrest, or reversal of the normal flow of intestinal contents toward the anal canal.

Convert K56.691 to ICD-9-CMHistory

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

ICD-9-CM
560.89 Intestinal obstruct NEC
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement K56.691 replaces the following previously assigned code(s):

  • K56.69 - Other intestinal obstruction
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K56.691Overview

Is K56.691 (Other intestinal obstruction) a billable code?

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

What MS-DRG does K56.691 group to?

When other complete intestinal obstruction is the principal diagnosis on an inpatient stay, it groups to MS-DRG 388, 389, 390, with relative weights from 0.5440 to 1.4768 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K56.691?

Under the General Equivalence Mappings, other complete intestinal obstruction converts to ICD-9-CM 560.89 (intestinal obstruct NEC). 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.