G90-G99: Other disorders of the nervous system
G91: Hydrocephalus
Hydrocephalus is a medical condition that is characterized by an excessive accumulation of cerebrospinal fluid (CSF) in the brain. This fluid normally circulates around the brain and spinal cord, providing a cushion-like support. In Hydrocephalus, due to various reasons such as blockages, poor absorption or overproduction, this fluid builds up in the cavities (ventricles) deep within the brain. This accumulation can cause an expansion of the ventricles, leading to pressure on the brain tissues. Common symptoms may include headache, nausea, vomiting, blurred vision, balance problems, behavioral changes, cognitive difficulties, and in infants, a rapidly increasing head size. If left untreated, hydrocephalus can lead to progressive brain damage, severely impacting physical and cognitive abilities. Hydrocephalus can occur at any age, but it's more prevalent in infants and adults over 60. It’s typically not contagious, as it results from genetic defects, infections affecting the brain, brain tumors, or injuries to the brain.
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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.