Hydrocephalus, unspecified

This code signifies an abnormal accumulation of cerebrospinal fluid (CSF) within the brain's ventricles, leading to increased intracranial pressure, without further specification of its cause or type. It represents a general diagnosis of hydrocephalus when more specific details are unavailable.

Use this code when the medical record clearly indicates hydrocephalus but lacks documentation specifying its etiology (e.g., congenital, acquired, communicating, non-communicating) or whether it's normal pressure hydrocephalus. This is often an interim diagnosis or used when diagnostic workup is incomplete.

• Avoid using this code if more specific documentation regarding the type or cause of hydrocephalus is available; always strive for the highest level of specificity.
• Query the provider for additional details if "hydrocephalus" is documented without further clarification to allow for more precise coding.
• Do not confuse with codes for specific types of hydrocephalus (e.g., G91.0, G91.1, G91.2, G91.3) or conditions that may cause hydrocephalus (e.g., brain tumors).