California AB539 prohibits health care service plans from modifying or rescinding prior authorizations after treatment is rendered.

California AB539 amends the Health and Safety Code and the Insurance Code to ensure that health care service plans and health insurers cannot modify or rescind prior authorizations for specific treatments after the provider has rendered the service in good faith. The approved prior authorization must remain valid for at least one year from the date of approval, or the period requested by the treating provider for the course of the prescribed treatment, not to exceed one year.

California AB539 prohibits health care service plans from modifying or rescinding prior authorizations after treatment is rendered.

California AB539 amends the Health and Safety Code and the Insurance Code to ensure that health care service plans and health insurers cannot modify or rescind prior authorizations for specific treatments after the provider has rendered the service in good faith. The approved prior authorization must remain valid for at least one year from the date of approval, or the period requested by the treating provider for the course of the prescribed treatment, not to exceed one year.