HCPCS Level II code E0721 describes a transcutaneous electrical nerve stimulator specifically designed for nerves in the auricular region, representing provision of TENS therapy targeted to the ear/auricular area; service type: transcutaneous neurostimulation therapy; typical site of service: outpatient clinic, pain management clinic, or ambulatory care setting where localized auricular stimulation is provided.

For related coverage guidance, see recent payer policy updates: Prior Authorization for Durable Medical Equipment (DME), Continuous Passive Motion (CPM) Devices, Push-Rim Activated Power-Assist Device (E0986) — Manual Wheelchair Accessory.