CPT® Code 86771

1. Indications

The laboratory test associated with CPT® Code 86771 is indicated for the following conditions:

• Shigellosis This test is performed when a patient presents with symptoms consistent with Shigella infection, such as abdominal pain, fever, and bloody diarrhea.
• Acute Dysentery The test is indicated for patients exhibiting signs of acute dysentery, which may include severe diarrhea and gastrointestinal distress.
• Exposure History Testing may be warranted in individuals who have been exposed to contaminated food or water sources known to harbor Shigella.

2. Procedure

The procedure for testing antibodies to Shigella involves several key steps that ensure accurate results. First, a healthcare professional will collect a blood sample from the patient, typically through venipuncture, where a needle is inserted into a vein to draw blood. This sample is then processed in a laboratory setting. The laboratory technician may also collect a fecal sample if necessary, depending on the clinical scenario. Once the samples are obtained, they are subjected to specific laboratory techniques to detect the presence of antibodies. The Western Blot method involves separating proteins from the Shigella bacterium and transferring them onto a membrane, where they are probed with the patient's serum to identify specific antibodies. Alternatively, the enzyme-linked immunosorbent assay (ELISA) is used, which involves coating a plate with Shigella antigens and adding the patient's serum to see if antibodies bind to these antigens. The results from these tests will help determine if the patient has been exposed to the Shigella bacterium and if an immune response has been generated.

3. Post-Procedure

After the antibody testing for Shigella is completed, the healthcare provider will review the results with the patient. If antibodies are detected, it may indicate a current or past infection, and further clinical evaluation may be necessary to determine the appropriate treatment plan. Patients may be advised on symptom management and hydration, especially if they are experiencing gastrointestinal symptoms. Follow-up appointments may be scheduled to monitor the patient's condition and response to any prescribed treatments. Additionally, if the test results are negative but clinical suspicion remains high, further testing or alternative diagnostic methods may be considered to ensure accurate diagnosis and care.