Intracranial and intraspinal phlebitis and thrombophlebitis

This code represents inflammation of the veins within the skull or spinal canal, often accompanied by blood clot formation. This condition can affect various intracranial or intraspinal venous structures, leading to impaired blood flow and potential neurological deficits.

Use this code when documentation specifies phlebitis or thrombophlebitis affecting the intracranial or intraspinal venous system. This diagnosis is typically supported by imaging studies (e.g., MRI, CT venography) demonstrating venous inflammation or thrombosis, along with clinical signs and symptoms.

• Carefully review documentation to differentiate between pyogenic and nonpyogenic causes, as nonpyogenic intracranial phlebitis has a specific exclusion.
• Ensure no co-occurrence with conditions listed in the "Excludes1" notes, such as those related to pregnancy or abortion.
• Do not use this code if the condition is described as complicating nonpyogenic intraspinal phlebitis and thrombophlebitis, as indicated in the "Excludes2" note.