Tex. Hum. Res. Code § 73.001
In this chapter:
(3) "Developmental delay" means a significant variation in normal development as measured by appropriate diagnostic instruments and procedures, in one or more of the following areas:
Added by Acts 1983, 68th Leg., p.1012, ch. 235, art. 4, Sec. 4(a), eff. Sept. 1, 1983.
Amended by Acts 1985, 69th Leg., ch. 931, art. 12, Sec. 1, eff. Sept. 1, 1985;
Acts 1997, 75th Leg., ch. 923, Sec. 1, eff. Sept. 1, 1997.
Acts 2015, 84th Leg., R.S., Ch. 1 (S.B. 219), Sec. 4.304, eff. April 2, 2015.