2026 ICD-10-CM Diagnosis Code K91.30Postprocedural intestinal obstruction, unspecified as to partial versus complete

ICD-10-CM Codes›K00–K95›K90-K95›K91

ICD-10-CM K91.30
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K91.30 is a billable ICD-10-CM diagnosis code for postprocedural intestinal obstruction, unspecified as to partial versus complete. 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 and Postprocedural or postoperative digestive system complication.

Code Identity

ICD-10-CM Code
K91.30
Billable Status
Yes — Valid for Submission
Code Describes
Postprocedural intestinal obstruction, unspecified as to partial versus complete
Short Description
Postproc intestinal obst, unsp as to partial versus complete
Parent Code
K91.3
Postprocedural intestinal obstruction

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK90-K95Other diseases of the digestive system
CategoryK91Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
This CodeK91.30Postprocedural intestinal obstruction, unspecified as to partial versus complete

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Afferent loop syndrome
  • Anastomotic stricture of large intestine
  • Anastomotic stricture of small intestine
  • Chronic partial afferent loop obstruction
  • Duodenal anastomotic stricture
  • Efferent loop syndrome
  • Functional intestinal obstruction due to decreased peristalsis
  • Gastroduodenal disorder
  • Intestinal obstruction due to a procedure
  • Partial obstruction of intestine
  • Partial obstruction of intestine following procedure
  • Partial obstruction of small bowel
  • Postgastric surgery syndrome
  • Postoperative ileus
  • Postoperative intestinal obstruction
  • Postoperative mechanical intestinal obstruction
  • Postoperative obstruction of large intestine
  • Postoperative obstruction of small intestine
  • Stricture of anastomosis of gastrointestinal tract
  • Stricture of anastomosis of intestine
  • Stricture of intestine following radiotherapy

Tabular List NotesGuidance

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

Inclusion Terms

  • Postprocedural intestinal obstruction NOS

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.

    • Adhesions, adhesive(postinfective)
      • postoperative (gastrointestinal tract)
        • with obstruction
    • Complication(s) (from) (of)
      • gastrointestinal
        • postoperative
          • obstruction
    • Complication(s) (from) (of)
      • surgical procedure (on)
        • intestinal obstruction
    • Difficult, difficulty(in)
      • mechanical, gastroduodenal stoma
        • causing obstruction
    • Obstruction, obstructed, obstructive
      • intestine
        • postoperative

Clinical ClassificationClinical

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

CCSR DIG012
Intestinal obstruction and ileus
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG024
Postprocedural or postoperative digestive system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Afferent Loop Syndrome

    a complication of gastrojejunostomy (billroth ii procedure), a reconstructive gastroenterostomy. it is caused by acute (complete) or chronic (intermittent) obstruction of the afferent jejunal loop due to hernia, intussusception, kinking, volvulus, etc. it is characterized by pain and vomiting of bile-stained fluid.

Convert K91.30 to ICD-9-CMHistory

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

ICD-9-CM
997.49 Oth digestv system comp
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement K91.30 replaces the following previously assigned code(s):

  • K91.3 - Postprocedural 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 K91.30Overview

Is K91.30 (Postprocedural intestinal obstruction) a billable code?

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

What MS-DRG does K91.30 group to?

When postprocedural intestinal obstruction, unspecified as to partial versus complete 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 K91.30?

Under the General Equivalence Mappings, postprocedural intestinal obstruction, unspecified as to partial versus complete converts to ICD-9-CM 997.49 (oth digestv system comp). 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.