ICD-10 Code I63.6 – Cerebral infarction due to cerebral venous thrombosis, nonpyogenic (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I63.6 – Cerebral infarction due to cerebral venous thrombosis, nonpyogenic
What it is
I63.6 identifies a cerebral infarction caused by a noninfectious clot in the brain’s venous drainage system. Use it when documentation links the stroke to cerebral venous thrombosis rather than an arterial blockage.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include headache, focal neurologic deficits, seizures, altered mental status, or imaging evidence of venous thrombosis with infarction.
When to use this code
Use this code when the provider documents cerebral infarction due to cerebral venous thrombosis and specifies that the process is nonpyogenic. It is appropriate when imaging or clinical notes support venous thrombosis with infarction. Check documentation if the record only states stroke, thrombosis, or venous sinus thrombosis without clear linkage.
Do not use for
Do not use it for pyogenic venous thrombosis or for arterial ischemic stroke codes when the event is not venous in origin. If the documentation is nonspecific, check documentation.
Coding tip
Confirm that the infarction is explicitly attributed to cerebral venous thrombosis and that “nonpyogenic” is supported in the record before assigning I63.6.