ICD-10 Code I67.6 – Nonpyogenic thrombosis of intracranial venous system (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I67.6 – Nonpyogenic thrombosis of intracranial venous system
What it is
I67.6 identifies a noninfectious clot in the intracranial venous system, including the dural venous sinuses. It is used when documentation shows venous thrombosis inside the skull without a pyogenic, or pus-forming, cause.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include headache, focal neurologic deficits, seizures, papilledema, or signs of raised intracranial pressure.
When to use this code
Use I67.6 when the provider documents thrombosis of an intracranial vein or venous sinus and does not describe infection as the cause. It may appear in imaging-confirmed cerebral venous thrombosis or dural sinus thrombosis notes. Check documentation for the exact vessel involved.
Do not use for
Do not use this code for pyogenic or septic intracranial venous thrombosis, or for venous thrombosis outside the skull. If the record only says “stroke” or “headache,” check documentation before coding.
Coding tip
Code only when the intracranial venous thrombosis is clearly documented; if the cause or location is unclear, check documentation.