N31: Neuromuscular dysfunction of bladder, not elsewhere classified

N31.0: Uninhibited neuropathic bladder, not elsewhere classified

The bladder is like a balloon. There is a hollow space on the inside. This hollow space is surrounded by the bladder wall. There is a muscle in the bladder wall. When the muscle in the bladder wall contracts, the urine is squeezed out of the bladder and out of the body.

The muscle in the bladder wall is controlled by nerves. Many nerves run from the spinal cord and brain to the organs, skin and muscles in the body. If the nerves, brain or spinal cord are damaged, the muscle in the bladder can no longer work properly. Nerves, brain and spinal cord can be damaged, for example, by other conditions or following surgery.

The muscle in your bladder wall is working excessively. This means you have to urinate frequently, including at night-time. You may feel a constant, unpleasant urge to urinate. You may also no longer be able to hold in your urine properly.