ICD-10-CM 2027 diagnosis code

N35Urethral stricture

Not billable — use a more specific code

N35 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N35

N35 is the ICD-10-CM diagnosis code for urethral stricture. It belongs to block N30-N39 (other diseases of the urinary system) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: N35.0 (stricture), N35.1 (classified), N35.8 (stricture) and N35.9 (unspecified).

Don't report N35 together with the conditions in its Excludes1 note: congenital urethral stricture (Q64.3-) and postprocedural urethral stricture (N99.1-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under N35

Coding notes

Excludes1Not coded here — never report together with this code

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

Notes that apply from higher levels

Instructions written at a parent level also apply to N35.

Broader instructions also apply from N30-N39 Other diseases of the urinary system and Chapter 14: Diseases of the genitourinary system.

Code history

2016
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2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about N35

Is N35 billable?: No. N35 is a header code. Report one of its more specific subcodes instead.