Traumatic vasospastic syndrome, sequela

This code describes the long-term or residual effects of a traumatic vasospastic syndrome. This condition involves the persistent narrowing of blood vessels, often in the brain, that occurred as a result of a prior injury, leading to ongoing neurological or other systemic symptoms. The "sequela" designation indicates that the acute phase of the vasospasm has passed, but its lasting consequences are still present.

Use this code when documenting conditions such as chronic headaches, cognitive deficits, motor weakness, or other neurological impairments that are directly attributable to a past traumatic vasospasm. This applies when the patient is no longer in the acute phase of the vasospasm itself, but is being treated for its enduring complications.

• Requires a seventh character "S" for sequela, indicating a late effect.
• Always sequence this code after the code(s) for the specific manifestation(s) of the sequela (e.g., chronic headache, cognitive impairment).
• Do not use for acute traumatic vasospasm; refer to codes in the T75.21- series for initial encounters.