Ensuring Access to Quality Complex Rehabilitation Technology Act of 2019 This bill establishes a specific benefit category (i.e., classification) for complex rehabilitation technology items under Medicare. The Centers for Medicare & Medicaid Services must set payment for such items in accordance with a specified methodology that includes certain clinical conditions and quality standards. The bill also excludes such items from Medicare's competitive acquisition program (in which rates are set through a competitive bidding program rather than by an established fee schedule). The bill defines complex rehabilitation technology item to include complex rehabilitation manual and power wheelchairs, specialized seating and positioning items, and adaptive equipment such as standing frames and gait trainers, including associated accessories.