Relating to court-ordered financial support by parents of an adult with a medically determinable disability.

HB 4509 updates Texas Family Code provisions to clarify court-ordered financial support for adult children with medically determinable disabilities. It amends chapter and subchapter titles to explicitly include "adult with medically determinable disability" and revises Section 154.001 to allow courts to order ongoing parental support for such adults indefinitely. The bill also specifies that orders for this support are excluded from certain termination rules under Section 154.004(c). This directly affects parents of adult disabled children and courts determining financial obligations under Texas law.