What must be present for the application of a modality under constant attendance?

For the application of a modality under constant attendance, it is essential that the provider must be physically present in the office while the therapy is being administered. This requirement ensures that the provider is available to monitor the patient's response to the treatment, make any necessary adjustments, and provide immediate care if complications arise. Constant attendance means that the practitioner is actively involved in the treatment process rather than merely supervising from a distance.

Furthermore, while documentation of prior sessions, patient consent, and equipment readiness are important aspects of patient care and billing, they do not fulfill the specific requirement of "constant attendance." The presence of the provider is what defines the nature of the service being rendered and is crucial for compliance with billing and coding standards for these types of therapies.