ICD-10-CM 2027
ICD-10 code for urethra acquired diverticulum
From the official ICD-10-CM alphabetic index entry “Diverticulum, diverticula (multiple) › urethra (acquired)”. Page updated September 29, 2026.
About coding urethra acquired diverticulum
The ICD-10-CM code for urethra acquired diverticulum is N36.1 (Urethral diverticulum). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on N36.1.
Within N36 (other disorders of urethra), N36.1 is specifically for urethral diverticulum. Related codes cover urethral fistula (N36.0), urethral caruncle (N36.2), urethral functional and muscular disorders (N36.4), urethral false passage (N36.5), other specified disorders of urethra (N36.8) and urethral disorder, unspecified (N36.9).
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 698 (Other Kidney and Urinary Tract Diagnoses with MCC, relative weight 1.6398), DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC, relative weight 1.0003) and DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), 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.
More specific urethra acquired diverticulum codes (official index)
- congenital Q64.79 — Other congenital malformations of bladder and urethra
Common questions about urethra acquired diverticulum ICD-10 codes
What is the ICD-10 code for urethra acquired diverticulum?
- N36.1 — Urethral diverticulum. More specific codes apply when the documentation supports them: Q64.79.
What is the ICD-10 code for congenital urethra acquired diverticulum?
- Q64.79 — Other congenital malformations of bladder and urethra.
Is N36.1 billable?
- Yes. N36.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N36.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N36.1 as a principal diagnosis.
Is N36.1 a CC or MCC?
- No. N36.1 is neither a CC nor an MCC under MS-DRG v44.0.