CPT® Code 0107T

1. Indications

The quantitative sensory testing (QST) procedure is indicated for the assessment of sensory nerve function in patients who may be experiencing sensory abnormalities. The following conditions may warrant the use of this testing:

• Diabetic Neuropathy - Patients with diabetes may develop nerve damage that affects their ability to sense vibrations, pressure, or temperature.
• Peripheral Neuropathy - This condition can result from various causes, including autoimmune diseases, infections, or exposure to toxins, leading to altered sensory perception.
• Neurological Disorders - Conditions such as multiple sclerosis or Guillain-Barré syndrome may necessitate sensory testing to evaluate nerve function.
• Post-Surgical Assessment - Following surgical procedures that may impact nerve function, QST can help assess recovery and nerve integrity.

2. Procedure

The procedure for quantitative sensory testing (QST) involves several key steps to ensure accurate assessment of sensory nerve function:

• Step 1: Patient Preparation - The patient is positioned comfortably, and the limb to be tested is exposed. The physician explains the procedure to the patient, ensuring they understand what to expect during the testing process.
• Step 2: Application of Vibration Stimuli - A device specifically designed for QST is used to deliver controlled vibration stimuli to the selected extremity. The intensity and frequency of the vibration are adjusted according to the testing protocol to elicit a sensory response.
• Step 3: Sensory Response Assessment - The physician observes and records the patient's responses to the vibration stimuli. This may involve asking the patient to indicate when they feel the vibration or to rate the intensity of the sensation experienced.
• Step 4: Interpretation of Results - After completing the testing, the physician interprets the results based on the patient's responses. This interpretation helps in determining the integrity of the large diameter sensory fibers and identifying any potential abnormalities.

3. Post-Procedure

After the quantitative sensory testing is completed, the physician may provide the patient with information regarding the results and any necessary follow-up actions. Depending on the findings, further diagnostic testing or referrals to specialists may be recommended. The patient is typically advised on any symptoms to monitor and when to seek further medical attention. Recovery from the procedure is generally immediate, as it is non-invasive and does not require any downtime. Documentation of the testing results is essential for accurate coding and billing, as well as for future reference in the patient's medical record.