CPT® Code 82690

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The CPT® Code 82690 refers to a laboratory test that measures the therapeutic levels of ethchlorvynol, a sedative and hypnotic medication commonly known by its brand name, Placidyl. Ethchlorvynol is classified as a tertiary carbinol and is typically prescribed for short-term management of insomnia. The testing can be performed using either a blood sample or a urine sample. For blood testing, a venipuncture is required, which is a procedure where a needle is inserted into a vein to collect blood. Alternatively, a urine sample can be collected through random voiding, which involves the patient urinating into a container without any specific preparation. The analysis of the samples is conducted using gas chromatography, a technique that separates and analyzes compounds in the samples to determine the concentration of ethchlorvynol present. This test is crucial for monitoring the levels of the medication in the body to ensure they remain within therapeutic ranges, thereby optimizing treatment efficacy and minimizing potential side effects.