G45.9

Applicable To

• Spasm of cerebral artery

• TIA

• Transient cerebral ischemia NOS

Approximate Synonyms

• Transient cerebral ischemia

• Transient ischemic attack

Clinical Information

• A brief attack from a few minutes to an hour) of cerebral dysfunction of vascular origin, with no persistent neurological deficit.

• A disorder characterized by a brief attack less than 24 hours) of cerebral dysfunction of vascular origin, with no persistent neurological deficit.

• A transient ischemic attack tia) is a stroke that comes and goes quickly. It happens when the blood supply to part of the brain stops briefly. Symptoms of a tia are like other stroke symptoms, but do not last as long. They happen suddenly, and include

• Brief reversible episodes of focal, nonconvulsive ischemic dysfunction of the brain having a duration of less than 24 hours, and usually less than one hour, caused by transient thrombotic or embolic blood vessel occlusion or stenosis. Events may be classified by arterial distribution, temporal pattern, or etiology e.g., embolic vs. Thrombotic). from Adams et al., Principles of Neurology, 6th ed, pp814-6)

• Mini stroke which is recoverable

• Recurring, transient episodes of neurologic dysfunction caused by cerebral ischemia; onset is usually sudden, often when the patient is active; the attack may last a few seconds to several hours; neurologic symptoms depend on the artery involved.

Details

• G45.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM G45.9 became effective on October 1, 2022.

• This is the American ICD-10-CM version of G45.9 – other international versions of ICD-10 G45.9 may differ.