AZ SB1599

Prohibits health care insurers from imposing preexisting condition exclusions on individual, group, or small employer health benefits plans in Arizona.

Requires health care insurers to accept all eligible employers and individuals who apply for coverage.

Prohibits annual or lifetime dollar limits on essential benefits, which include ambulatory services, emergency services, hospitalization, maternity care, mental health services, prescription drugs, and preventive care.

Limits premium rate variations to: individual vs. family coverage, geographic rating area, age (no more than 3-to-1 variation for adults), and tobacco use (no more than 1.07-to-1 variation).

Requires insurers to cover dependent children up to age 26 regardless of marital status, residency, school attendance, financial dependency, or employer coverage eligibility, and allows those aging out to enroll in another plan without waiting for open enrollment.