In this section, “gradient compression garment” means a garment that: is used for the treatment of lymphedema; requires a prescription; and is custom fit for the individual for whom the garment is prescribed. “Gradient compression garment” does not include disposable medical supplies, including over–the–counter compression or elastic knee–high or other stocking products. This section applies to: insurers and nonprofit health service plans that provide hospital, medical, or surgical benefits to individuals or groups on an expense–incurred basis under health insurance policies or contracts that are issued or delivered in the State; and health maintenance organizations that provide hospital, medical, or surgical benefits to individuals or groups under contracts that are issued or delivered in the State. An entity subject to this section shall provide coverage for the medically necessary diagnosis, evaluation, and treatment of lymphedema, including equipment, supplies, complex decongestive therapy, gradient compression garments, and self–management training and education. Subject to paragraph (2) of this subsection, the coverage required under this section may be subject to the annual deductibles, copayments, or coinsurance requirements imposed by an entity subject to this section for similar coverages under the same health insurance policy or contract. The annual deductibles, copayments, or coinsurance requirements imposed under paragraph (1) of this subsection for the coverage required under this section may not be greater than the annual deductibles, copayments, or coinsurance requirements imposed by the entity for similar coverages.