MA H1137

Authorizes the Commissioner of Public Health to designate contagious and infectious diseases as "of heightened public health importance"

Prohibits all health insurance plans, including state employee coverage, MassHealth, commercial insurers, HMOs, and Blue Cross Blue Shield, from charging cost sharing (copays, coinsurance, deductibles) or requiring utilization review (prior authorization, step therapy) for prevention, diagnosis, or treatment of designated diseases

Requires the commissioner to notify relevant state agencies and insurers immediately upon designation, and to maintain a publicly accessible list of designated diseases with annual review

Cost sharing requirements become effective 30 days after a disease is designated by the commissioner

Includes an exception allowing cost sharing if eliminating it would cause a plan to lose its federal tax-exempt status under the Internal Revenue Code