G90: Disorders of autonomic nervous system
G90.9: Disorder of autonomic nervous system, unspecified
Many processes run unconsciously in the body. This includes breathing or digesting food, for example. The heartbeat or blood pressure are also adjusted independently by the body. These processes are controlled by a particular part of the nervous system.
If this part of the nervous system is damaged, organs such as the heart, intestine and bladder may stop working properly. Depending on exactly what the disorder is, there can be various symptoms. For example, there may be an irregular heartbeat, or blood pressure may be too low. There may also be problems with digestion or when urinating.
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If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.