34 C.F.R. § 303.320
(a) General.
(1) The lead agency may adopt procedures, consistent with the requirements of this section, to screen children under the age of three who have been referred to the part C program to determine whether they are suspected of having a disability under this part. If the lead agency or EIS provider proposes to screen a child, it must—
(2) If the parent consents to the screening and the screening or other available information indicates that the child is—
(b) Definition of screening procedures. Screening procedures—
(c) Condition for evaluation or early intervention services. For every child under the age of three who is referred to the part C program or screened in accordance with paragraph (a) of this section, the lead agency is not required to—
(2) Make early intervention services available under this part to the child unless a determination is made that the child meets the definition of infant or toddler with a disability under § 303.21.
(Authority: 20 U.S.C. 1432(4)(E)(ix), 1434(1), 1435(a)(2), 1435(a)(5) and (a)(6), 1435(c)(2)(G), 1437(a)(6), 1439(a)(6))