Mo. Rev. Stat. § 197.158: Complaint procedure to be provided to patients.

Every hospital, ambulatory surgery center, and abortion facility shall, beginning June 1, 2006, provide each patient an opportunity to submit to the hospital, ambulatory surgical center, or abortion facility administration complaints, comments, and suggestions related to the care they received or their personal observations related to the quality of care provided. The department shall promulgate rules to implement this section.