Other congenital hydrocephalus

This code signifies congenital hydrocephalus that does not fit into more specific categories of congenital hydrocephalus. It indicates an abnormal accumulation of cerebrospinal fluid within the brain's ventricles, present at birth, due to causes other than those explicitly classified elsewhere. This condition leads to increased intracranial pressure and potential neurological impairment.

Use this code when documentation specifies congenital hydrocephalus but does not provide details to classify it as communicating, obstructive, or due to other specific congenital anomalies. This code is appropriate when the physician's diagnosis is "other congenital hydrocephalus" or "congenital hydrocephalus, NOS." Supporting documentation should clearly state the congenital nature of the hydrocephalus and rule out other specific types.

• Do not use this code if a more specific code for congenital hydrocephalus (e.g., Q03.0-Q03.1, Q03.9) can be assigned based on documentation.
• Always review the medical record for the underlying cause or associated congenital anomalies, as these may require additional codes.
• Differentiate from acquired hydrocephalus (G91.-), which develops after birth due to various etiologies.