and prevalence of chronic conditions, life-threatening illnesses, disabilities, or rare diseases that such children have. (D) The type of delivery systems and payment models used to provide services to such children under this section. (E) The number and characteristics of providers or health care professionals designated as health homes pursuant to this section, including the number and characteristics of out-of-State providers or health care professionals who provide health care items and services to such children. (F) The extent to which such children receive health care items and services under a State plan under this title or a waiver of such plan from out-of-State providers, and the extent to which such services were provided on an emergency or non-emergency basis. (G) Quality measures developed specifically with respect to health care items and services furnished to children with medically complex conditions. (e) Definitions In this section: (1) Child with medically complex conditions (A) In general Subject to subparagraph (B), the term child with medically complex conditions means an individual under 21 years of age who— (i) is eligible for medical assistance under the State plan under this title or under a waiver of such plan