Orthopedic Impairment — What IDEA and Section 504 Mean for Schools and Families Orthopedic Impairment (OI) is an IDEA eligibility category and may also qualify a student for protections under Section 504.  Orthopedic Impairment (OI) includes congenital anomalies, impairments caused by disease, and impairments from other causes (e.g., cerebral palsy, limb loss, neuromuscular conditions) that adversely affect a child’s educational performance.  This article explains how students qualify, the referral and evaluation process, common assessments, evidence‑based supports, classroom accommodations and modifications, and parents’ procedural rights. Legal Framework and Definition IDEA (Orthopedic Impairment): A severe orthopedic impairment that adversely affects educational performance and requires specially designed instruction and/or related services.  States/districts add local criteria and procedures consistent with federal law. Section 504: Protects students whose physical or...