US lawWashingtonRegulationsTitle 388 — SOCIAL AND HEALTH SERVICES, DEPARTMENT OFChapter 388-828 — THE DEVELOPMENTAL DISABILITIES ADMINISTRATION (DDA) ASSESSMENT388-828-2080WAC 388-828-2080WAC 388-828-2080. How does DDA determine your assessment age?Last amended: 2021Year: 2026Length: 23 wordsOfficial source If you are within thirty calendar days of your next birthday, DDA determines your assessment age to be that of your next birthday.PreviousWAC 388-828-2060NextWAC 388-828-3000