Transient global amnesia
ICD-10 G45.4 is a billable code used to indicate a diagnosis of transient global amnesia.
Transient global amnesia (TGA) is characterized by a sudden, temporary episode of memory loss that cannot be attributed to a more common neurological condition. Patients typically present with an inability to form new memories and may be unable to recall recent events, although their personal identity and basic cognitive functions remain intact. The episode usually lasts for several hours, with most patients recovering completely within 24 hours. TGA is often triggered by physical or emotional stress, and while the exact pathophysiology remains unclear, it is believed to involve transient ischemic events affecting the hippocampus. Unlike transient ischemic attacks (TIAs) or strokes, TGA does not typically present with neurological deficits or focal symptoms. Diagnosis is primarily clinical, supported by neuroimaging to rule out other causes. Understanding TGA is crucial for stroke prevention, as it can mimic symptoms of cerebrovascular syndromes, leading to unnecessary interventions if misdiagnosed.
Detailed neurological examination findings, patient history, and imaging results.
Patients presenting with sudden memory loss, often after a stressful event.
Ensure clear documentation of the transient nature of symptoms and exclusion of other conditions.
Initial assessment notes, imaging results, and follow-up care plans.
Patients presenting to the ER with acute memory loss and confusion.
Rapid assessment to rule out stroke or TIA is critical.
Used to rule out stroke or other intracranial pathology in patients presenting with sudden memory loss.
Indication for the scan must be clearly documented.
Neurologists should ensure that the rationale for imaging is well-supported.
Symptoms of transient global amnesia typically last from a few minutes to 24 hours, with most patients recovering completely within a day.
