An Act to further define medical necessity determinations

This bill directs insurance companies and healthcare providers in Massachusetts to determine the medical necessity of mental health services based on the judgment of the treating clinician working with the patient. The legislation requires that these determinations be documented in the patient's medical record to ensure transparency and patient involvement. By amending two specific state laws, the bill shifts the authority for deciding what mental health care is needed from external reviewers to the doctors and patients directly involved in the treatment. This change aims to give more weight to clinical expertise and patient input when evaluating coverage for mental health services.