CPT® Code 87267

1. Indications

The CPT® Code 87267 is indicated for the detection of enterovirus antigens in patients presenting with symptoms or conditions associated with enterovirus infections. The following are specific indications for performing this test:

• Mild Respiratory Illnesses - Symptoms may include cough, sore throat, and fever, which can be indicative of an enterovirus infection.
• Hand, Foot, and Mouth Disease - This condition is characterized by sores in the mouth and a rash on the hands and feet, commonly caused by enteroviruses.
• Conjunctivitis - Inflammation of the conjunctiva that may be associated with enteroviral infections.
• Aseptic Meningitis - A condition where the protective membranes covering the brain and spinal cord become inflamed, often linked to enterovirus infections.
• Encephalitis - Inflammation of the brain that can occur due to enterovirus infection.
• Myocarditis and Pericarditis - Inflammation of the heart muscle and the surrounding sac, respectively, which can be caused by enteroviruses.
• Acute Flaccid Paralysis - A rare but serious condition that can result from enterovirus infections.
• Inflammatory Muscle Disease - Muscle inflammation that may be associated with enteroviral infections.
• Severe Neonatal Sepsis-like Disease - A serious condition in newborns that may be linked to enterovirus infections.

2. Procedure

The procedure for the CPT® Code 87267 involves several critical steps to ensure accurate detection of enterovirus antigens. The first step is the collection of appropriate samples, which can be either respiratory or fecal. For respiratory samples, a nasopharyngeal swab, aspirate, or washing is performed to obtain the specimen. In the case of fecal samples, a rectal swab or stool sampling is utilized. Once the samples are collected, they are processed in the laboratory. Next, the samples are inoculated with enterovirus antibodies that are conjugated to fluorescein isothiocyanate. This conjugation is essential as it allows for the visualization of the enterovirus antigens under an epifluorescence microscope. The samples are then examined using this specialized microscope. If enterovirus antigens are present, the antibodies will bind to them, resulting in a bright green fluorescence in the nuclei of the infected cells. In contrast, non-infected surrounding cells will stain a dull red color, allowing for differentiation between infected and non-infected cells. This visual confirmation is crucial for the accurate diagnosis of enterovirus infections. The entire process is relatively rapid, with results typically available within 2-3 hours, although it is important to note that this method is less sensitive than the reverse transcription-polymerase chain reaction (RT-PCR) technique.

3. Post-Procedure

After the completion of the procedure associated with CPT® Code 87267, the laboratory will analyze the samples and report the findings. The expected turnaround time for results is approximately 2-3 hours, which allows for timely clinical decision-making. It is important for healthcare providers to interpret the results in conjunction with the patient's clinical presentation and history. If enterovirus antigens are detected, appropriate clinical management and follow-up care should be initiated based on the specific symptoms and conditions presented by the patient. Additionally, healthcare professionals should remain aware that while the DFA technique provides rapid results, it may not be as sensitive as other methods such as RT-PCR, and further testing may be warranted in certain cases.