What is Physically Impaired? 

From Minnesota Department of Education: Students determined to be Physically Impaired (PI) have medically diagnosed, chronic, physical impairment, either congenital or acquired, that may adversely affect physical or academic functioning and result in the need for special education and related services. Examples of diagnoses that may meet these criteria are cerebral palsy, spina bifida, muscular dystrophy, spinal cord injury, otegenesis imperfecta and arthrogryposis.