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(a) Funds provided under the Pub. L. No. 99-457 grant may not be used to satisfy a financial commitment for services which would have been paid for from another public or private source but for the enactment of Pub. L. No. 99-457, except that, whenever considered necessary to prevent the delay in the receipt of appropriate early intervention services by the infant or toddler or family in a timely fashion, funds provided under this subchapter may be used to pay the provider of services pending reimbursement from the agency which has ultimate responsibility for the payment.
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(b) Nothing in this subchapter shall be construed to permit the state to reduce medical or other assistance available or to alter eligibility under Title V of the Social Security Act, relating to maternal and child health, or Title XIX of the Social Security Act, relating to Medicaid for infants and toddlers with disabilities, within the state.