2026 ICD-10-CM Diagnosis Code K41.31Unilateral femoral hernia, with obstruction, without gangrene, recurrent

ICD-10-CM Codes›K00–K95›K40-K46›K41

ICD-10-CM K41.31
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K41.31 is a billable ICD-10-CM diagnosis code for unilateral femoral hernia, with obstruction, without 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 Intestinal obstruction and ileus.

Code Identity

ICD-10-CM Code
K41.31
Billable Status
Yes — Valid for Submission
Code Describes
Unilateral femoral hernia, with obstruction, without gangrene, recurrent
Short Description
Unilateral femoral hernia, w obst, w/o gangrene, recurrent
Parent Code
K41.3
Unilateral femoral hernia, with obstruction, without gangrene

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK40-K46Hernia
CategoryK41Femoral hernia
This CodeK41.31Unilateral femoral hernia, with obstruction, without gangrene, recurrent

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Irreducible femoral hernia
  • Irreducible left femoral hernia
  • Irreducible right femoral hernia
  • Left recurrent femoral hernia
  • Obstructed left femoral hernia
  • Obstructed recurrent femoral hernia
  • Obstructed recurrent left femoral hernia
  • Obstructed recurrent right femoral hernia
  • Obstructed right femoral hernia
  • Recurrent femoral hernia with obstruction
  • Recurrent irreducible left femoral hernia
  • Recurrent irreducible right femoral hernia
  • Right recurrent femoral 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)
      • femoral
        • with
          • obstruction
            • recurrent
    • Hernia, hernial(acquired) (recurrent)
      • femoral
        • unilateral
          • with
            • 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 DIG012
Intestinal obstruction and ileus
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Hernia

A hernia happens when part of an internal organ or tissue bulges through a weak area of muscle. Most hernias are in the abdomen.

Read the full article at MedlinePlus

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

Convert K41.31 to ICD-9-CMHistory

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

ICD-9-CM
552.01 Rec unil fem hern w obst
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 K41.31Overview

Is K41.31 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unilateral femoral hernia, with obstruction, without gangrene, recurrent on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K41.31 group to?

When unilateral femoral hernia, with obstruction, without 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 K41.31?

Under the General Equivalence Mappings, unilateral femoral hernia, with obstruction, without gangrene, recurrent converts to ICD-9-CM 552.01 (rec unil fem hern w obst). 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.