Maryland State Law defines developmental disability as a severe chronic disability that:
- 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;
- is manifested before the individual attains the age of 22;
- is likely to continue indefinitely;
- results in the inability to live independently without external support or continuing and regular assistance; and
- reflects the need for a combination and sequence of special, interdisciplinary, or generic care, treatment, or other services that are planned and coordinated for that individual.