2026 ICD-10-CM Diagnosis Code N49.3Fournier gangrene

ICD-10-CM Codes›N00–N99›N40-N53›N49

ICD-10-CM N49.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N49.3 is a billable ICD-10-CM diagnosis code for fournier gangrene. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 727 through 728. Coders also document this condition as Fournier's gangrene. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Gangrene and Inflammatory conditions of male genital organs.

Code Identity

ICD-10-CM Code
N49.3
Billable Status
Yes — Valid for Submission
Code Describes
Fournier gangrene
Short Description
Fournier gangrene
Same as the full description in the CMS dataset.
Parent Code
N49
Inflammatory disorders of male genital organs, not elsewhere classified

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN40-N53Diseases of male genital organs
CategoryN49Inflammatory disorders of male genital organs, not elsewhere classified
This CodeN49.3Fournier gangrene

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Fournier's gangrene
  • Fournier's gangrene of penis
  • Fournier's gangrene of scrotum
  • Gangrene of perineum
  • Gangrene of scrotum
  • Injury of fascia of pelvis
  • Penile 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.

    • Disease, diseased
      • Fournier (gangrene)
    • Fournier disease or gangrene
    • Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
      • Fournier
    • Gangrene, gangrenous(connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)
      • scrotum

Clinical ClassificationClinical

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

CCSR CIR028
Gangrene
Default principal diagnosis: inpatient No · outpatient No
CCSR GEN013
Inflammatory conditions of male genital organs
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Fournier Gangrene

    an acute necrotic infection of the scrotum; penis; or perineum. it is characterized by scrotum pain and redness with rapid progression to gangrene and sloughing of tissue. fournier gangrene is usually secondary to perirectal or periurethral infections associated with local trauma, operative procedures, or urinary tract disease.

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 N49.3 to ICD-9-CMHistory

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

ICD-9-CM
608.4 Male gen inflam dis 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 N49.3Overview

Is N49.3 a billable code?

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

What MS-DRG does N49.3 group to?

When fournier gangrene is the principal diagnosis on an inpatient stay, it groups to MS-DRG 727, 728, with relative weights from 0.8112 to 1.4829 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N49.3?

Under the General Equivalence Mappings, fournier gangrene converts to ICD-9-CM 608.4 (male gen inflam dis 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.