A18.13

What This Code Means

This code describes a tuberculosis infection affecting the urinary system organs other than the kidneys and bladder, such as the ureters or urethra. It represents an extrapulmonary form of tuberculosis that has spread to these specific urinary tract structures.

Coding Tips

• •Verify documentation specifies which urinary organ is affected (ureters, urethra, etc.) to ensure A18.13 is the most specific code rather than other urinary TB codes like A18.11 (kidney TB) or A18.12 (bladder TB)
• •Confirm the TB diagnosis is confirmed (not suspected) and document whether the patient is on anti-tuberculosis treatment, as this may affect severity coding and clinical management documentation