N35.9Urethral stricture, unspecified

N35.9 is the ICD-10-CM diagnosis code for urethral stricture, unspecified. It belongs to category N35 (urethral stricture), 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 2 subcodes must be used instead.

Within N35, choose N35.9 (unspecified) only when documentation doesn't support a more specific option: post-traumatic urethral stricture (N35.0), postinfective urethral stricture, not elsewhere classified (N35.1) and other urethral stricture (N35.8).

To report this condition, pick the subcode that matches the documentation: N35.91 (male) and N35.92 (female).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2019 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 598.9 (urethral stricture, unspecified).