Another state has joined the effort to improve major medical insurance benefits for young adults.

Delaware has started enforcing a mandatory increase in dependent age limits, regulators say.

A recently signed bill, House Bill 446, has changed the definition of “dependent” in Delaware to increase the lowest maximum age for dependents to 24, from 18.

The new, expanded definition includes adult children who are attending college or living in Delaware.

The law applies only to individual policies and group policies that cover 50 or fewer employees.