The term “medical care” means amounts paid—

(A) for the diagnosis, cure, mitigation, treatment, or prevention of disease, or for the purpose of affecting any structure or function of the body,

(B) for transportation primarily for and essential to medical care referred to in subparagraph (A),

(C) for qualified long-term care services (as defined in section 7702B(c)), or

(D) for insurance (including amounts paid as premiums under part B of title XVIII of the Social Security Act, relating to supplementary medical insurance for the aged) covering medical care referred to in subparagraphs (A) and (B) or for any qualified long-term care insurance contract (as defined in section 7702B(b)).

In the case of a qualified long-term care insurance contract (as defined in section 7702B(b)), only eligible long-term care premiums (as defined in paragraph (10)) shall be taken into account under subparagraph (D).