ICD-10 Code G96.08 – Other cranial cerebrospinal fluid leak (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G96.08 – Other cranial cerebrospinal fluid leak
What it is
This code identifies a cerebrospinal fluid leak from the cranial area that is not otherwise specified by a more precise category. It usually means CSF is escaping through a defect involving the skull, dura, or adjacent structures.
Clinical signs
Typical findings include clear, watery drainage from the nose or ear, especially after head trauma or surgery. Clinical features vary; refer to documentation for the exact leak site and any associated complications.
When to use this code
Use G96.08 when the record documents a cranial CSF leak but does not name a more specific cranial leak code. This may apply after skull base injury, neurosurgical procedures, or other documented cranial defects. Code only when the provider clearly identifies the leak.
Do not use for
Do not use this code for spinal CSF leaks or for symptoms alone without documented CSF leakage. If the record specifies a different cranial leak type, use the more specific code instead.
Coding tip
Check the note for the leak location and cause, and code the most specific documented diagnosis.