ICD-10 Code A18.13 – Tuberculosis of other urinary organs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A18.13 – Tuberculosis of other urinary organs
What it is
This code identifies tuberculosis infection involving urinary organs other than the kidney, bladder, or urethra. Use it when documentation specifies TB in another urinary site and does not name a different organ code.
Clinical signs
Clinical features vary; refer to documentation. Findings may include urinary tract symptoms, abnormal imaging, or evidence of genitourinary tuberculosis in a non-kidney, non-bladder, non-urethral site.
When to use this code
Use A18.13 when the provider documents tuberculosis affecting an unspecified “other” urinary organ, such as a urinary structure not separately coded elsewhere. It is appropriate when the record supports active TB involvement at that site. If the note is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for tuberculosis of the kidney, bladder, or urethra, which have different codes. Do not use it when the urinary organ is not specified or when TB is documented only as a history.
Coding tip
Confirm the exact urinary organ named in the record; if the site is not clearly “other,” choose the more specific TB code or query the provider.