Versions of Indiana Code 31-9-2-131.3. \"Ultimate authority of the department\" on LawServer 2023 Indiana Code 31-9-2-131.3. “Ultimate authority of the department” 2022 Indiana Code 31-9-2-131.3. “Ultimate authority of the department” 2021 Indiana Code 31-9-2-131.3. “Ultimate authority of the department”