ICD-10 Code A54.21 – Gonococcal infection of kidney and ureter (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A54.21 – Gonococcal infection of kidney and ureter
What it is
This code identifies gonococcal infection involving the kidney and ureter, caused by Neisseria gonorrhoeae. Use it when documentation specifically links gonorrhea to upper urinary tract structures.
Clinical signs
Clinical features vary; refer to documentation. Findings may include urinary tract symptoms with evidence of gonococcal infection affecting the kidney or ureter.
When to use this code
Use A54.21 when the provider documents gonococcal infection of the kidney, ureter, or both. It is appropriate when the site is clearly identified and not just listed as a general genitourinary infection.
If the record only says gonorrhea without an anatomic site, you should not assume this code. Check documentation for a confirmed upper urinary tract diagnosis.
Do not use for
Do not use this code for uncomplicated gonorrhea, lower urinary tract infection, or nonspecific urethral infection. Check documentation if the infection site is unclear.
Coding tip
Always confirm that the kidney or ureter is named in the provider’s diagnosis before assigning A54.21.