2026 ICD-10-CM Diagnosis Code N34.1Nonspecific urethritis

ICD-10-CM Codes›N00–N99›N30-N39›N34

ICD-10-CM N34.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

N34.1 is a billable ICD-10-CM diagnosis code for nonspecific urethritis. 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, 742 through 743, 757 through 759. Coders also document this condition as arthropathy associated with nonspecific urethritis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Urinary tract infections.

Code Identity

ICD-10-CM Code
N34.1
Billable Status
Yes — Valid for Submission
Code Describes
Nonspecific urethritis
Short Description
Nonspecific urethritis
Same as the full description in the CMS dataset.
Parent Code
N34
Urethritis and urethral syndrome

Code Classification

ChapterN00–N99Diseases of the genitourinary system
SectionN30-N39Other diseases of the urinary system
CategoryN34Urethritis and urethral syndrome
This CodeN34.1Nonspecific urethritis

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Arthropathy associated with nonspecific urethritis
  • Infection caused by Ureaplasma urealyticum
  • Nongonococcal urethritis
  • Urethritis caused by Ureaplasma urealyticum

Tabular List NotesGuidance

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

Inclusion Terms

  • Nongonococcal urethritis
  • Nonvenereal urethritis

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.

    • Urethritis(anterior) (posterior)
      • nongonococcal
    • Urethritis(anterior) (posterior)
      • nonspecific
    • Urethritis(anterior) (posterior)
      • nonvenereal

Clinical ClassificationClinical

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

CCSR GEN004
Urinary tract infections
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Urethral Disorders

The urethra is the tube that allows urine to pass out of the body. In men, it's a long tube that runs through the penis. It also carries semen in men. In women, it's short and is just above the vagina. Urethral problems may happen due to aging, illness, or injury. They include:

Read the full article at MedlinePlus

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

Convert N34.1 to ICD-9-CMHistory

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

ICD-9-CM
099.40 Unspcf nongnccl urethrts
Approximate The match is approximate rather than exact.
ICD-9-CM
597.80 Urethritis NOS
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 N34.1Overview

Is N34.1 (Urethritis and urethral syndrome) a billable code?

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

What MS-DRG does N34.1 group to?

When nonspecific urethritis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 727, 728, 742, 743, 757, 758, 759, with relative weights from 0.6636 to 1.8348 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of N34.1?

Under the General Equivalence Mappings, nonspecific urethritis converts to ICD-9-CM 099.40 (unspcf nongnccl urethrts) and 597.80 (urethritis NOS). 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.