2026 ICD-10-CM Diagnosis Code K40.41Unilateral inguinal hernia, with gangrene, recurrent

ICD-10-CM Codes›K00–K95›K40-K46›K40

ICD-10-CM K40.41
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K40.41 is a billable ICD-10-CM diagnosis code for unilateral inguinal hernia, with gangrene, recurrent. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Abdominal hernia and Gangrene.

Code Identity

ICD-10-CM Code
K40.41
Billable Status
Yes — Valid for Submission
Code Describes
Unilateral inguinal hernia, with gangrene, recurrent
Short Description
Unilateral inguinal hernia, with gangrene, recurrent
Same as the full description in the CMS dataset.
Parent Code
K40.4
Unilateral inguinal hernia, with gangrene

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK40-K46Hernia
CategoryK40Inguinal hernia
This CodeK40.41Unilateral inguinal hernia, with gangrene, recurrent

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Left inguinal hernia with gangrene
  • Obstructed inguinal hernia with gangrene
  • Obstructed left inguinal hernia
  • Obstructed left inguinal hernia with gangrene
  • Obstructed recurrent hernia of anterior abdominal wall
  • Obstructed recurrent inguinal hernia
  • Obstructed recurrent left inguinal hernia
  • Obstructed recurrent left inguinal hernia with gangrene
  • Obstructed recurrent right inguinal hernia
  • Obstructed recurrent right inguinal hernia with gangrene
  • Obstructed right inguinal hernia
  • Obstructed right inguinal hernia with gangrene
  • Recurrent hernia of anterior abdominal wall with gangrene
  • Recurrent inguinal hernia with gangrene
  • Recurrent left inguinal hernia
  • Recurrent left inguinal hernia with gangrene
  • Recurrent right inguinal hernia
  • Recurrent right inguinal hernia with gangrene
  • Right inguinal hernia with gangrene

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)
      • inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding)
        • with
          • gangrene (and obstruction)
            • recurrent
    • Hernia, hernial(acquired) (recurrent)
      • inguinal (direct) (external) (funicular) (indirect) (internal) (oblique) (scrotal) (sliding)
        • unilateral
          • with
            • gangrene (and obstruction)
              • recurrent

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

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 K40.41 to ICD-9-CMHistory

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

ICD-9-CM
550.01 Recur unil ing hern-gang
Exact Match The mapping is direct, with no qualifiers.

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 K40.41Overview

Is K40.41 (Unilateral inguinal hernia, with gangrene) a billable code?

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

What MS-DRG does K40.41 group to?

When unilateral inguinal hernia, with gangrene, recurrent 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 K40.41?

Under the General Equivalence Mappings, unilateral inguinal hernia, with gangrene, recurrent converts to ICD-9-CM 550.01 (recur unil ing hern-gang). The mapping is a direct match.

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.