Hyperbaric Oxygen Therapy Session – 1 hour. Hyperbaric Oxygen Therapy (HBOT). HBOT involves the breathing of pure oxygen while in a sealed chamber that has been pressurized at 1 1/2 to 3 times normal atmospheric pressure.These changes can improve blood circulation and the bloodies ability to deliver oxygen to the body. Additional Treatments may be recommended by a physician. Treatment cost includes the facility fee, physician’s fee, related medical procedures and drugs required to administer the plan of care. Not included are diagnostic studies, consultations with additional specialists and cost of complication management; travel, food and lodging.