Infectious and parasitic diseases (A00-B99).
- Chlamydial urethritis – inflammation of the urethra caused by bacteria of the Chlamydiaceae family.
- HIV infection
Genitourinary system (kidneys, urinary tract – sex organs) (N00-N99)
- Mycoplasma urethritis – inflammation of the urethra caused by mycoplasma (type of bacteria without a cell wall).
- Trichomonad urethritis – urethritis caused by trichomonads, which are protozoa (single-celled organisms).
- Urethritides caused by various other bacteria
