Non-invasive studies are recognized for payment if the results impact the clinical course of the patient, for example, they are considered unnecessary when the patient requires
other diagnostic tests or treatments regardless of the outcome of the non-invasive studies.
Performing non-invasive extracranial studies (CPT 93880 or 93881) and evaluation Non-invasive limb veins (CPT 93965, 93970 or 93971) in it encounter is not appropriate as a
general practice or accepted protocol and consequently they should not be billed.
Non-invasive physiological studies of extracranial arteries are considered for payment in the evaluation of the following conditions:
• Carotid puffs
• Monitoring of the patient with known carotid stenosis
• Stroke evaluation
• Evaluation of a transient cerebral ischemic attack
• Evaluation of a patient with syncope and symptoms suggestive of arterial disease
vertebrobasilar
• In the preoperative evaluation of a carotid endarterectomy
• In the evaluation of pulsatile masses in the neck
• In the evaluation of amaurosis fugax
• In the evaluation of a patient with vasculitis involving the carotid arteries
extracranial
