ICD-10 Code A18.10 – Tuberculosis of genitourinary system, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A18.10 – Tuberculosis of genitourinary system, unspecified
What it is
A18.10 identifies tuberculosis affecting the genitourinary system when the exact site is not specified. Use it for documented TB involvement of the kidneys, urinary tract, or reproductive organs without further detail.
Clinical signs
Clinical features vary; refer to documentation. Patients may have urinary or pelvic complaints, or findings suggesting genitourinary infection with tuberculosis confirmed or suspected by the clinician.
When to use this code
Use A18.10 when the record states genitourinary tuberculosis but does not name a specific organ or subsite. It is also appropriate when the provider documents TB of the genitourinary system and no additional detail is available. Check documentation for laterality or organ-specific coding if noted.
Do not use for
Do not use this code for pulmonary tuberculosis or other extrapulmonary TB sites outside the genitourinary system. If the chart identifies a specific genitourinary organ or a different TB manifestation, code that documented condition instead.
Coding tip
Query the provider when the note says “GU TB” but the affected organ is unclear.