ICD-10 Code G97.83 – Intracranial hypotension following lumbar cerebrospinal fluid shunting (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G97.83 – Intracranial hypotension following lumbar cerebrospinal fluid shunting
What it is
This code identifies low intracranial pressure caused by a lumbar cerebrospinal fluid shunt. It is used when the shunt leads to symptoms or findings consistent with intracranial hypotension.
Clinical signs
Common features include positional headache that worsens upright and improves when lying down, sometimes with nausea, neck pain, or visual symptoms. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly links intracranial hypotension to a lumbar CSF shunt, such as overdrainage or shunt-related low-pressure symptoms. You should also use it when the provider documents this as a postoperative complication. Check documentation if the cause is not explicit.
Do not use for
Do not use this code for headache after shunt placement unless intracranial hypotension is documented. Do not use it for unrelated causes of low CSF pressure or for shunt malfunction without hypotension.
Coding tip
Code the complication only when the provider connects it to the lumbar shunt in the note.