(a) To meet the LOC I criteria, a person must:(1) meet the following criteria:(A) have a full scale intelligence quotient (IQ) score of 69 or below, obtained by administering a standardized individual intelligence test; or(B) have a full scale IQ score of 75 or below, obtained by administering a standardized individual intelligence test, and have a primary diagnosis by a licensed physician of a related condition that is included on the list of diagnostic codes for persons with related conditions that are approved by DADS and posted on its website at www.dads.state.tx.us; and(2) have an adaptive behavior level of I, II, III, or IV (i.e., mild to extreme deficits in adaptive behavior) obtained by administering a standardized assessment of adaptive behavior.(b) If a person has a sensory or motor deficit for which a specially standardized intelligence test or a certain portion of a standardized intelligence test is appropriate, the appropriate test or portion thereof and the resultant score should be used.(c) If a full scale IQ score cannot be obtained from a standardized intelligence test due to age, functioning level, or other severe limitations, an estimate of a person's intellectual functioning should be documented with clinical justification.