Upper level: b639 Urinary functions, other specified and unspecified
(Urine excretion function)
Functions of filtration and collection of the urine.
Inclusions: functions of urinary filtration, collection of urine; impairments such as in renal insufficiency, anuria, oliguria, hydronephrosis, hypotonic urinary bladder and ureteric obstruction
Exclusion: urination functions (b620)
Lower livel: