CPT® Code 80184

The CPT® Code 80184 refers to a laboratory test specifically designed to measure the levels of phenobarbital in the blood. Phenobarbital, which is also known by its brand name Luminal, is classified as an anticonvulsant and hypnotic medication. It is primarily prescribed for the management of seizures and the treatment of insomnia. The mechanism of action involves the reduction of electrical activity in the brain, which helps to stabilize neuronal excitability and prevent seizure episodes. The administration of phenobarbital can occur through oral ingestion or via injection, depending on the clinical scenario and patient needs. Regular monitoring of blood concentration levels is essential, particularly during treatment, as it helps to ensure that the drug remains within therapeutic ranges. This monitoring is especially critical when patients experience breakthrough seizure activity or signs of oversedation, which may indicate that the blood levels of phenobarbital are either too high or too low. To perform this test, a blood sample is collected through a procedure known as venipuncture, which is separately reportable. Following the collection, the serum is analyzed using high-performance liquid chromatography, a sophisticated technique that allows for precise measurement of the drug concentration in the blood.