Hyperbaric oxygen therapy transportation: daily wound care rides that run for weeks

What a hyperbaric course looks like from the van

Hyperbaric oxygen therapy puts the patient’s whole body inside a pressurized chamber to breathe pure oxygen, and it is usually a series, not a single visit. The Undersea and Hyperbaric Medical Society (UHMS) defines it as treatment in a hard-sided chamber at no less than 2.0 atmospheres, breathing medical oxygen for a time “typically between 90-120 minutes per treatment.” It adds that most disorders need treatments delivered daily for several weeks.

That makes these rides look like a radiation course, with longer visits:

• The same slot most days. Daily treatments at one center make a recurring pickup the natural booking.
• Long visits. Johns Hopkins Medicine says sessions run from 45 minutes up to 300 minutes depending on the reason for treatment. Check-in and getting in and out of the chamber add to the time on the clock.
• Weeks of trips. The UHMS protocol for radiation damage to the jawbone, as one example, starts with 30 daily treatments, then adds 10 more after minor surgery when the response is good. That is 40 visits and 80 one-way rides. A 36-session course of cardiac rehab builds a run of rides the same way.

MedlinePlus says some hospitals have a hyperbaric chamber and smaller units may be found in outpatient centers. Pickup and drop-off can be a hospital entrance or a stand-alone clinic, so confirm the exact door.

Which riders Medicare covers

Medicare’s list of covered uses is short. Its national coverage decision, section 20.29 of the NCD Manual, pays for treatment in a chamber for 15 conditions. Several are emergencies, such as carbon monoxide poisoning, decompression illness and gas gangrene, and those are not standing-order rides. The ones that turn into weeks of scheduled rides include:

• Diabetic wounds of the lower legs and feet. The patient must have diabetes, a wound graded Wagner III or higher, and a failed course of standard wound therapy, meaning no measurable signs of healing for at least 30 days.
• Radiation injury. Osteoradionecrosis (bone damaged by radiation) and soft tissue radionecrosis, each as an add-on to conventional treatment. UHMS calls this delayed radiation injury and says it usually appears six months or more after radiation, sometimes many years later, so these riders may have finished cancer treatment long ago.
• Chronic refractory osteomyelitis. A bone infection that has not responded to conventional medical and surgical care.
• Compromised skin grafts. To prepare and preserve a graft, not as the first treatment of a wound.

The same section lists conditions Medicare will not pay for, including pressure (decubitus) ulcers, stasis ulcers and chronic peripheral vascular insufficiency. A rider with a bedsore is not headed for a Medicare-covered chamber.

The diabetic wound rules set the rhythm of the ride series. Wounds must be evaluated at least every 30 days during treatment, and Medicare stops covering further treatment if any 30-day period shows no measurable healing. A course can end at a 30-day mark with little notice, so check in with the center around each one.

Riders who cannot put weight on a foot

Keeping pressure off the wound is part of standard care for a diabetic foot ulcer, and that changes the vehicle and the transfer. The American Diabetes Association’s Standards of Care name offloading, or pressure relief, as the first basic principle of treating a foot ulcer. The International Working Group on the Diabetic Foot’s 2023 offloading guideline recommends a non-removable knee-high device as the first choice for a neuropathic ulcer on the sole of the front or middle of the foot: a total contact cast or a non-removable walker boot that reaches just below the knee. It also suggests a walking aid when the device makes the patient unsteady and the risk of falling is high.

For dispatch, that means:

1. Ask how the rider moves, not how they used to. A cast, a boot, crutches, a walker, a knee scooter or a wheelchair each call for a different setup.
2. Match the vehicle to the step. A rider who must not put weight on one foot should not be climbing into a high van. A lift or ramp, and often wheelchair transportation, is the safer booking.
3. Plan for door-to-door help. A rider balancing on one foot with a walker needs a driver beside them from the door to the seat. See door-to-door service.
4. Leave room for the leg. A knee-high cast or boot is bulky, so give the rider a seat with space to position the leg comfortably.

A rider who has had an amputation needs a different setup again. Our guide to driving riders with an amputation covers prostheses, transfers and wheelchairs that tip.

After the chamber: ears, fatigue and blood sugar

Some riders leave a hyperbaric session tired or lightheaded, and drivers should know what is normal and what is not. MedlinePlus explains that the chamber pressure is about two and a half times normal atmospheric pressure. These are the after-effects drivers are most likely to see:

• Lightheadedness right after a session, according to Johns Hopkins Medicine.
• Fatigue and headaches, which Johns Hopkins calls mild side effects.
• Ear popping as the patient leaves the chamber, which MedlinePlus compares to coming up from a dive. Johns Hopkins lists middle ear injury as the most common complication, so a rider whose ear pain does not clear should tell the center.

Johns Hopkins also lists low blood sugar among possible complications, and many of these riders have diabetes. NIDDK lists the signs: feeling shaky or jittery, hungry, tired, dizzy, lightheaded, confused or irritable, a fast or uneven heartbeat, a headache, or trouble seeing or speaking clearly. Very low blood sugar can make a person pass out or have a seizure. NIDDK says severe low blood sugar needs treatment right away and tells people to call 911 when no glucagon kit is at hand.

Drivers are not clinicians, so the response is simple. A rider who seems confused, very shaky or hard to wake gets a call to 911 and a call to dispatch, in that order. Our medical emergency guide covers what the driver does until help arrives. At booking, ask whether the rider carries a snack or glucose tablets their care team has told them to use.

The wound care visits around the treatments

Hyperbaric oxygen is an add-on, not a replacement, so a wound rider has other appointments in the same weeks. Medicare’s coverage decision requires it to be used in addition to standard wound care, which it describes as checking and correcting blood flow, controlling blood sugar, removing dead tissue, moist dressings, offloading and treating infection.

Those pieces often mean separate trips: a wound clinic visit, a podiatrist, a vascular surgeon or a lab. Ask at booking whether any of them happen at the same center on treatment days. A wound check right after a session, in the same building, can ride home on the same return leg instead of needing its own round trip.

Who pays for hyperbaric rides

The treatment and the ride are paid separately. Johns Hopkins Medicine says Medicare, Medicaid and many insurance companies generally cover hyperbaric oxygen therapy for the approved conditions, but not always, and prior authorization may apply.

• Original Medicare. It pays for the treatment for covered conditions. For getting there, Medicare.gov lists only ground ambulance, covered when traveling in another vehicle could put the patient’s health in danger.
• Medicaid. States must ensure necessary transportation to and from providers under 42 CFR 431.53, so a covered treatment course is a ride course. A daily course fits a standing order, and in some programs the treating facility sets it up. In Missouri, for example, clinicians at the treating facility can request one.
• Medicare Advantage. Some plans include rides. Count the course first, because 40 treatments are 80 one-way trips, and ask whether the plan’s yearly allowance covers them.
• The patient or family. Price the series up front. Our guide to private-pay ride packages covers selling a block of rides.

Setting up a hyperbaric ride series

Build the series once, with these details from the center and the rider:

1. The treatment count and days. Ask how many treatments are ordered and which days the center runs.
2. The appointment and walk-out times. Use the walk-out time for the return, not the chamber time alone.
3. The 30-day review dates. Mark them, and confirm the series is still going at each one.
4. Weight-bearing status and devices. Note the cast, boot, walker or wheelchair, and book the level of service to match.
5. Equipment. Ask whether the rider travels with a wound vac or other device that needs space or care in the vehicle.
6. The end date. Close the standing order when the last treatment is done, so the board does not carry ghost trips.

Keeping a hyperbaric series on time in HealthRide

A daily treatment course fits a recurring trip: schedule it once, HealthRide keeps it going, and you end the series after the last session. When a chamber runs late, the return can be a flexible trip that holds its place on the dispatch board and activates the moment the rider is ready. Riders get a text before each ride and another when the driver is on the way.