CPT® Code 87265

1. Indications

The CPT® Code 87265 is indicated for the detection of Bordetella pertussis and Bordetella parapertussis antigens in respiratory samples. This test is particularly relevant in the following clinical scenarios:

• Whooping Cough Diagnosis The test is performed to confirm the presence of B. pertussis or B. parapertussis in patients exhibiting symptoms of whooping cough, which include severe coughing fits, inspiratory whoop, and post-tussive vomiting.
• Respiratory Infection Evaluation It is utilized in the assessment of respiratory infections, especially in cases where the clinical presentation suggests a Bordetella infection.
• Outbreak Investigation The test may be employed during outbreaks of whooping cough to identify the causative agents and implement appropriate public health measures.

2. Procedure

The procedure for performing the antigen detection test using CPT® Code 87265 involves several key steps:

• Sample Collection A respiratory sample is obtained from the patient using one of three methods: a nasopharyngeal swab, aspirate, or washing. This step is critical as it ensures that the sample contains potential antigens from the pathogens being tested.
• Sample Preparation Once the sample is collected, it is treated with a detecting reagent that contains specific antibodies targeting Bordetella pertussis and Bordetella parapertussis. A counterstain is also added to enhance visualization under the microscope.
• Microscopic Examination The prepared sample is then examined under an epifluorescence microscope. During this examination, if B. pertussis or B. parapertussis antigens are present, the antibodies in the detecting reagent will bind to these antigens, resulting in a distinct color change that can be observed through the microscope.

3. Post-Procedure

After the procedure, the laboratory will analyze the results of the immunofluorescent test. If the test indicates the presence of Bordetella pertussis or Bordetella parapertussis antigens, the healthcare provider will be informed, allowing for timely diagnosis and treatment of the patient. It is important to note that while this test provides rapid results, it may be less sensitive than culture methods or reverse transcription-polymerase chain reaction (RT-PCR). Therefore, clinicians may consider follow-up testing or additional diagnostic methods based on the clinical context and the patient's condition. Proper documentation of the test results and any subsequent actions taken is essential for patient care and compliance with healthcare regulations.