2026 ICD-10-CM Diagnosis Code K43.4Parastomal hernia with gangrene

ICD-10-CM Codes›K00–K95›K40-K46›K43

ICD-10-CM K43.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K43.4 is a billable ICD-10-CM diagnosis code for parastomal hernia with gangrene. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 393 through 395. Coders also document this condition as incisional hernia with gangrene. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Abdominal hernia and Gangrene.

Code Identity

ICD-10-CM Code
K43.4
Billable Status
Yes — Valid for Submission
Code Describes
Parastomal hernia with gangrene
Short Description
Parastomal hernia with gangrene
Same as the full description in the CMS dataset.
Parent Code
K43
Ventral hernia

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK40-K46Hernia
CategoryK43Ventral hernia
This CodeK43.4Parastomal hernia with gangrene

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Incisional hernia with gangrene
  • Parastomal hernia
  • Parastomal hernia with gangrene

Tabular List NotesGuidance

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

Inclusion Terms

  • Gangrenous parastomal hernia

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.

    • Hernia, hernial(acquired) (recurrent)
      • parastomal
        • with
          • gangrene (and obstruction)

Clinical ClassificationClinical

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

CCSR DIG010
Abdominal hernia
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR CIR028
Gangrene
Default principal diagnosis: inpatient No · outpatient No

Clinical InformationClinical

  • Ventral Hernia

    the protrusion of abdominal cavity contents through the anterior abdominal wall.

  • Ventral Hernia with Obstruction without Mention of Gangrene

    the protrusion of contents of the abdominal cavity through the abdominal wall, at the site of the linea alba, which results in obstruction, without mention of necrosis of the herniated contents.

  • Ventral Hernia without Mention of Obstruction or Gangrene

    the protrusion of contents of the abdominal cavity through the abdominal wall, at the site of the linea alba, without mention of obstruction or necrosis of the herniated contents.

Patient EducationClinical

Gangrene

Gangrene is the death of tissues in your body. It happens when a part of your body loses its blood supply. Gangrene can happen on the surface of the body, such as on the skin, or inside the body, in muscles or organs. Causes include:

Read the full article at MedlinePlus

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

Convert K43.4 to ICD-9-CMHistory

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

ICD-9-CM
551.29 Gang ventral hernia NEC
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 K43.4Overview

Is K43.4 (Ventral hernia) a billable code?

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

What MS-DRG does K43.4 group to?

When parastomal hernia with gangrene is the principal diagnosis on an inpatient stay, it groups to MS-DRG 393, 394, 395, with relative weights from 0.6490 to 1.5993 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K43.4?

Under the General Equivalence Mappings, parastomal hernia with gangrene converts to ICD-9-CM 551.29 (gang ventral hernia 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.