Maryland Code, State Finance and Procurement § 7-405

(i) is attributable to a physical or mental impairment, other than the sole diagnosis of mental illness, or to a combination of mental and physical impairments;

(ii) is manifested before the individual attains the age of 22;

(iii) is likely to continue indefinitely;

(iv) results in an inability to live independently without external support or continuing and regular assistance; and

(v) reflects the need for a combination and sequence of special, interdisciplinary, or generic care, treatment, or other services that are individually planned and coordinated for the individual.