97035

Therapeutic Ultrasound Application

The application of therapeutic ultrasound to one or more body areas involves the use of high-frequency sound waves to penetrate soft tissues. This modality can be delivered in continuous (thermal) or pulsed (non-thermal/mechanical) modes, depending on the therapeutic goal. Thermal effects aim to increase tissue temperature, promote blood flow, and relax muscles, while non-thermal effects focus on tissue repair, inflammation reduction, and scar tissue remodeling through mechanical vibration. This procedure is performed by a qualified healthcare professional, such as a physical therapist, and is typically a supervised modality, meaning it is reported once per treatment session regardless of the duration.

Clinical Indications

  • Reduction of pain and inflammation in soft tissue injuries (e.g., sprains, strains)
  • Treatment of tendinopathies (e.g., Achilles tendonitis, patellar tendonitis, epicondylitis)
  • Management of bursitis (e.g., subacromial bursitis, trochanteric bursitis)
  • Adhesive capsulitis (frozen shoulder) to improve tissue extensibility
  • Myofascial pain syndrome and muscle spasms to promote relaxation and pain relief
  • Scar tissue management to improve flexibility and reduce adhesions
  • Enhancement of tissue healing in conditions like dermal ulcers or fractures (off-label for fractures in some contexts, focus on soft tissue)
  • Reduction of swelling and edema

Procedure Steps

  1. Patient assessment and identification of the target treatment area(s).
  2. Selection of appropriate ultrasound parameters (frequency, intensity, duty cycle, treatment time) based on the patient's condition, depth of tissue, and desired therapeutic effect.
  3. Application of an ultrasound coupling gel to the skin over the treatment area to ensure efficient transmission of sound waves.
  4. Application of the ultrasound transducer (sound head) to the skin, typically moved in slow, continuous, overlapping circular or stroking motions.
  5. Monitoring of the patient's comfort level and skin response during the application.
  6. Adjusting parameters as needed based on patient feedback and tissue response.
  7. Cleaning of the skin and equipment post-procedure.
  8. Documentation of the treatment parameters, duration, area treated, and patient response.

Coding Guidelines

  • CPT code 97035 is classified as a supervised modality and is typically reported once per treatment session, regardless of the number of body areas treated or the duration of the application.
  • This code does not represent 'constant attendance' by the therapist; rather, the therapist sets up the equipment and parameters and periodically monitors the patient.
  • It is important to document the specific body area(s) treated, the frequency (MHz), intensity (W/cm²), duty cycle (if pulsed), and duration of the ultrasound application, as well as the patient's response to the treatment.
  • While 97035 can be billed on the same day as other therapeutic procedures (e.g., therapeutic exercise, manual therapy), proper documentation must support the medical necessity of each service and clearly indicate that the services were distinct and not overlapping in time.
  • Supervised modalities like ultrasound are often considered 'passive modalities' and should be integrated into a comprehensive rehabilitation plan that includes active therapeutic procedures when appropriate.

Associated ICD-10 Codes