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HB4429 • 2026
BODY MASS INDEX-DISCRIMINATION
This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.
Using official source text because the generated explanation was unavailable or could not be confirmed against the official bill text.
BODY MASS INDEX-DISCRIMINATION
Rule 19(a) / Re-referred to Rules Committee
Assigned to Insurance Committee
First Reading
Referred to Rules Committee
Filed with the Clerk by Rep. Anne Stava
BODY MASS INDEX-DISCRIMINATION
Illinois General Assembly - Full Text of HB4429 Select Language × The Illinois General Assembly offers the Google Translate™ service for visitor convenience. In no way should it be considered accurate as to the translation of any content herein. Visitors of the Illinois General Assembly website are encouraged to use other translation services available on the internet. The English language version is always the official and authoritative version of this website. NOTE: To return to the original English language version, select the "Show Original" button on the Google Translate™ menu bar at the top of the window. 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Full Text of HB4429 Home Legislation Full Text HB4429 - 104th General Assembly Bill Status Full Text Votes Witness Slips Select Menu Bill Status Full Text Votes Witness Slips Printer Friendly Version Introduced Printer Friendly Version Introduced Open PDF 104TH GENERAL ASSEMBLY State of Illinois 2025 and 2026 HB4429 Introduced 1/20/2026, by Rep. Anne Stava SYNOPSIS AS INTRODUCED: 215 ILCS 5/356z.88 new 410 ILCS 50/5.3 new 410 ILCS 50/5.4 new 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. LRB104 17415 BAB 30840 b A BILL FOR HB4429 LRB104 17415 BAB 30840 b 1 AN ACT concerning regulation. 2 Be it enacted by the People of the State of Illinois, 3 represented in the General Assembly: 4 Section 25. The Illinois Insurance Code is amended by 5 adding Section 356z.88 as follows: 6 (215 ILCS 5/356z.88 new) 7 Sec. 356z.88. Prohibition on limiting coverage based on 8 body mass index. As used in this Section, "body mass index" 9 means the screening tool that uses an individual's height and 10 weight to estimate body fat. No policy of accident or health 11 insurance that is issued, amended, delivered, or renewed on or 12 after January 1, 2027 may limit or otherwise alter coverage 13 available to an insured based solely on that insured's weight 14 or body mass index. 15 Section 50. The Medical Patient Rights Act is amended by 16 adding Sections 5.3 and 5.4 as follows: 17 (410 ILCS 50/5.3 new) 18 Sec. 5.3. Discrimination on the basis of BMI; notice. 19 (a) As used in this Section, "body mass index" means the 20 screening tool that uses an individual's height and weight to 21 estimate body fat. HB4429 - 2 - LRB104 17415 BAB 30840 b 1 (b) No physician may make a diagnosis or determination of 2 treatment based solely on a patient's body mass index. 3 (c) Every hospital shall post, either by physical or 4 electronic means, in close proximity to every publicly 5 accessible entrance, a notice stating the following: 6 "You have the right to access treatment regardless of 7 your Body Mass Index (BMI), and to know if and to what 8 extent your doctor has considered your weight in diagnosis 9 or in determining treatment. If you feel that weight or 10 BMI has been used improperly, please call [insert number 11 for hospital grievance officer].". 12 (d) Nothing in this Section shall be construed to prohibit 13 the use of blood pressure, cholesterol, or other factors 14 typically used in combination with body mass index for 15 diagnosis or treatment. 16 (410 ILCS 50/5.4 new) 17 Sec. 5.4. Scientific assessment standards. Any physician, 18 medical student, resident, advanced practice registered nurse, 19 registered nurse, physician assistant, licensed behavior 20 analyst, licensed assistant behavior analyst, or clinical 21 psychologist who conducts medical, behavioral, or 22 psychological assessments shall only use methodology 23 recommended by peer-reviewed clinical practice guidelines or 24 methodology established through evidence-based standards that 25 are widely recognized by professional medical, behavioral, or HB4429 - 3 - LRB104 17415 BAB 30840 b 1 psychological organizations, respective to the form of 2 assessment, when conducting those assessments. Footer Disclaimer This site is maintained for the Illinois General Assembly by the Legislative Information System, 705 Stratton Building, Springfield, Illinois 62706. Contact ILGA Webmaster ILGA.gov uses cookies to ensure you get the best experience on our website. By continuing to browse ILGA.gov you consent to our use of cookies. Read About Cookies ILGA.GOV 2026 ILGA.gov | All Rights Reserved | ADA | Disclaimers | Learn This site is maintained for the Illinois General Assembly by the Legislative Information System, 705 Stratton Building, Springfield, Illinois 62706. Contact ILGA Webmaster ILGA.gov uses cookies to ensure you get the best experience on our website. By continuing to browse ILGA.gov you consent to our use of cookies. Read About Cookies ILGA.GOV 2026 ILGA.gov | All Rights Reserved | ADA | Disclaimers | Learn