2026 ICD-10-CM Diagnosis Code N37Urethral disorders in diseases classified elsewhere
ICD-10-CM Codes›N00–N99›N30-N39›N37
- Billable — Valid for Submission
- Not Chronic
N37 is a billable ICD-10-CM diagnosis code for urethral disorders in diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified diseases of bladder and urethra.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for N37.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Code First
- underlying disease
Type 1 Excludes
- urethritis (in):
- candidal infection B37.41
- chlamydial A56.01
- gonorrhea A54.01
- syphilis A52.76
- trichomonal infection A59.03
- tuberculosis A18.13
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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 N37 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N37Overview
Is N37 (Urethral disorders in diseases classified elsewhere) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report urethral disorders in diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Can N37 be a principal diagnosis?
No. This is a manifestation code: urethral disorders in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
What is the ICD-9 equivalent of N37?
Under the General Equivalence Mappings, urethral disorders in diseases classified elsewhere converts to ICD-9-CM 598.01 (ureth strict:oth infect). 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.
