ICD-10 Code G96.819 – Other intracranial hypotension (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G96.819 – Other intracranial hypotension
What it is
G96.819 identifies intracranial hypotension, meaning low pressure of the cerebrospinal fluid around the brain and spinal cord. Use it when the record documents intracranial hypotension but does not specify another exact cause.
Clinical signs
Typical findings include an orthostatic headache that worsens upright and improves when lying down. Clinical features vary; refer to documentation for supporting imaging or specialist assessment.
When to use this code
Use this code when the clinician documents other intracranial hypotension and the note does not name a more specific diagnosis. It may apply after evaluation for suspected cerebrospinal fluid pressure loss or when the cause is described as unspecified or other. Check documentation if the chart links the condition to a known postoperative, traumatic, or procedural cause.
Do not use for
Do not use it for headaches without documented intracranial hypotension. Do not use a more specific code when the provider identifies a precise cause or subtype.
Coding tip
Code only when the provider clearly documents intracranial hypotension; otherwise, query for clarification.