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ICD-10-CM 2027 diagnosis code

N35.021Urethral stricture due to childbirth

✓ Billable / specificFemale only

N35.021 is a valid, billable ICD-10-CM code for urethral stricture due to childbirth. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 N35.021

N35.021 is the ICD-10-CM diagnosis code for urethral stricture due to childbirth. 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 billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within N35.02 (post-traumatic urethral stricture, female), N35.021 is specifically for urethral stricture due to childbirth. Related codes cover other post-traumatic urethral stricture, female (N35.028).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 697 (Urethral Stricture, relative weight 0.97), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is on the CMS list of diagnoses consistent only with female patients (the sex-conflict edit itself was retired in FY2025).

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

Before ICD-10, this condition was coded in ICD-9-CM as 598.1 (traumatic urethral stricture).

Notes that apply from higher levels

Instructions written at a parent level also apply to N35.021.

› From N35.0 Post-traumatic urethral stricture
Excludes1
  • postprocedural urethral stricture (N99.1-)
› From N35 Urethral stricture
Excludes1
  • congenital urethral stricture (Q64.3-)
  • postprocedural urethral stricture (N99.1-)

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

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to N35.021.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 11 · Diseases and Disorders of the Kidney and Urinary Tract

ICD-9-CM equivalent

Converter →
  • 598.1Traumatic urethral strictureapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about N35.021

Is N35.021 billable?

Yes. N35.021 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can N35.021 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict N35.021 as a principal diagnosis.

Is N35.021 a CC or MCC?

No. N35.021 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does N35.021 group to?

N35.021 is used in the MS-DRG v44.0 logic for MS-DRG 697 (Urethral Stricture). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for N35.021?

The CMS General Equivalence Mappings map N35.021 to ICD-9-CM 598.1.