HB 4429

Amends the Illinois Insurance Code. Provides that no policy of accident or health insurance that is issued, amended, delivered, or renewed on or after January 1, 2027 may limit or otherwise alter coverage available to an insured based solely on that insured's weight or body mass index. Amends the Medical Patient Rights Act. Provides that no physician may make a diagnosis or determination of treatment based solely on a patient's body mass index. Establishes disclosure requirements for hospitals concerning the use of body mass index in diagnosis and treatment. Provides that any physician, medical student, resident, advanced practice registered nurse, registered nurse, physician assistant, licensed behavior analyst, licensed assistant behavior analyst, or clinical psychologist who conducts medical, behavioral, or psychological assessments shall only use methodology recommended by peer-reviewed clinical practice guidelines or methodology established through evidence-based standards that are widely recognized by professional medical, behavioral, or psychological organizations, respective to the form of assessment, when conducting those assessments.