NPI Atlas

N35 – Urethral stricture

ICD-10-CM 2027 diagnosis code · Other diseases of the urinary system

Non-billable header

ICD-10-CM code N35

Code: N35 (claims format: N35)
Description: Urethral stricture
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 14. Diseases of the genitourinary system (N00-N99)
Block: N30-N39 Other diseases of the urinary system

Billable codes under N35

N35 is a header code and cannot be used on claims. Choose the most specific code:

N35.0 – Post-traumatic urethral strictureHeader (more codes below)
N35.1 – Postinfective urethral stricture, not elsewhere classifiedHeader (more codes below)
N35.8 – Other urethral strictureHeader (more codes below)
N35.9 – Urethral stricture, unspecifiedHeader (more codes below)

Notes for N35

Excludes1 (not coded here):

congenital urethral stricture (Q64.3-)
postprocedural urethral stricture (N99.1-)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block N30-N39

Excludes2 (not included here):

urinary infection (complicating):
abortion or ectopic or molar pregnancy (O00-O07, O08.8)
pregnancy, childbirth and the puerperium (O23.-, O75.3, O86.2-)

Frequently asked questions

What is ICD-10 code N35?

N35 is the ICD-10-CM code for urethral stricture, in the block N30-N39 (Other diseases of the urinary system).

Is N35 a billable code?

No. N35 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.