2026 ICD-10-CM Diagnosis Code K41.90Unilateral femoral hernia, without obstruction or gangrene, not specified as recurrent

ICD-10-CM Codes›K00–K95›K40-K46›K41

ICD-10-CM K41.90
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K41.90 is a billable ICD-10-CM diagnosis code for unilateral femoral hernia, without obstruction or gangrene, not specified as 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. Coders also document this condition as Béclard's hernia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Abdominal hernia.

Code Identity

ICD-10-CM Code
K41.90
Billable Status
Yes — Valid for Submission
Code Describes
Unilateral femoral hernia, without obstruction or gangrene, not specified as recurrent
Short Description
Unil femoral hernia, w/o obst or gangrene, not spcf as recur
Parent Code
K41.9
Unilateral femoral hernia, without obstruction or gangrene

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK40-K46Hernia
CategoryK41Femoral hernia
This CodeK41.90Unilateral femoral hernia, without obstruction or gangrene, not specified as recurrent

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Béclard's hernia
  • Cloquet's hernia
  • Complicated femoral hernia
  • Femoral hernia
  • Left femoral hernia
  • Right femoral hernia

Tabular List NotesGuidance

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

Inclusion Terms

  • Femoral hernia NOS
  • Unilateral femoral hernia 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.

    • Hernia, hernial(acquired) (recurrent)
      • femoral
    • Hernia, hernial(acquired) (recurrent)
      • femoral
        • unilateral
    • Hernia, hernial(acquired) (recurrent)
      • femoral
        • unilateral
          • not specified as recurrent
    • Hernia, hernial(acquired) (recurrent)
      • femoral
        • not specified as recurrent

Clinical ClassificationClinical

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

CCSR DIG010
Abdominal hernia
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Femoral Hernia

    the protrusion of contents of the abdominal cavity, into the weak area at the posterior wall of the femoral canal, just inferior to the inguinal ligament.

  • Femoral Hernia with Obstruction

    the protrusion of contents of the abdominal cavity, into the femoral canal, which results in obstruction of intestinal peristalsis.

  • Femoral Hernia with Obstruction without Mention of Gangrene

    the protrusion of contents of the abdominal cavity, into the femoral canal, which results in obstruction of intestinal peristalsis, with no mention of necrosis of the herniated contents.

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 K41.90 to ICD-9-CMHistory

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

ICD-9-CM
553.00 Unilat femoral hernia
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 K41.90Overview

Is K41.90 (Unilateral femoral hernia, without obstruction or gangrene) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unilateral femoral hernia, without obstruction or gangrene, not specified as recurrent on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K41.90 group to?

When unilateral femoral hernia, without obstruction or gangrene, not specified as 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 K41.90?

Under the General Equivalence Mappings, unilateral femoral hernia, without obstruction or gangrene, not specified as recurrent converts to ICD-9-CM 553.00 (unilat femoral hernia). 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.