If a claim for leukemia, multiple myeloma, non-Hodgkin lymphoma, or cancer of the lung, brain, stomach, esophagus, intestines, rectum, kidney, bladder, prostate, or testes filed by an employee with five or more years of service as a firefighter is accepted or determined to be compensable, section 386-21 shall remain applicable; provided that the employer shall be liable for medical care, services, and supplies for a minimum of one hundred ten per cent, and not to exceed one hundred fifty per cent of fees prescribed in the Medicare Resource Based Relative Value Scale applicable to Hawaii as prepared by the United States Department of Health and Human Services.