2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

N34.1 is a billable ICD-10-CM diagnosis code for nonspecific urethritis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to N34.1: its own notes plus those printed at N34, block N30-N39, and Chapter 14. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Nongonococcal urethritis
  • Nonvenereal urethritis

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From N34 Urethritis and urethral syndrome applies to 4 codes
  • Reiter's disease (M02.3-)
  • urethritis in diseases with a predominantly sexual mode of transmission (A50-A64)
  • urethrotrigonitis (N30.3-)
From Block N30-N39 Other diseases of the urinary system applies to 85 codes
  • urinary infection (complicating):
  • abortion or ectopic or molar pregnancy (O00-O07, O08.8)
  • pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)
From Chapter 14 (N00-N99) Diseases of the genitourinary system applies to 838 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From N34 Urethritis and urethral syndrome applies to 4 codes
  • code (B95-B97), to identify infectious agent.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name N34.1, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming N34.1: they are not reported together with it, unless the two conditions are unrelated.

  • Block A50-A64 Infections with a predominantly sexual mode of transmission
    nonspecific and nongonococcal urethritis (N34.1)
  • N39.0 Urinary tract infection, site not specified
    urethritis (N34.-) names N34.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About N34.1Overview

What is the ICD-10 code for nonspecific urethritis?

The ICD-10-CM code for nonspecific urethritis is N34.1 (sometimes written as N341). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

What MS-DRG does N34.1 group to?

When nonspecific urethritis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 742, 759, 727, 743, 728, 758, 757, with relative weights from 0.7687 to 1.8448 depending on complications. Higher weights mean higher Medicare reimbursement.

Does N34.1 need an additional code?

When the condition applies, yes. The Use Additional Code note at N34, which applies to N34.1, reads: code (B95-B97), to identify infectious agent.. The additional code is reported after N34.1.

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.