Chlamydial cystitis and urethritis

This code identifies inflammation of the bladder (cystitis) and/or urethra (urethritis) specifically caused by a Chlamydia trachomatis infection. It indicates a genitourinary infection with chlamydial etiology.

Apply this code when documentation confirms a diagnosis of cystitis or urethritis, and laboratory testing or clinical assessment identifies Chlamydia trachomatis as the causative agent. This is appropriate for both acute and chronic presentations of chlamydial genitourinary inflammation.

• Ensure documentation explicitly links the cystitis/urethritis to Chlamydia infection; avoid using for non-specific or other bacterial causes.
• Do not code additional, separate chlamydial infections (e.g., cervicitis, proctitis) with this code; use more specific codes for those conditions.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter, followed by any associated symptoms.