GB/T16180-20145.4四级5,4.1定级原则器官严重缺损或畸形,有严重功能障碍或并发症,存在特殊医疗依赖,或部分生活自理障碍或无生活自理障碍。5.4.2四级条款系列凡符合5.4.1或下列条款之一者均为工伤四级。1)中度智能损伤;2)重度癫痫;3)精神病性症,经系统治疗1年后仍缺乏社交能力者;4)单肢瘫肌力≤2级;5)双手部分肌瘫肌力≤2级; GB / T16180-20145.4 four 5.4.1 grading rules organ serious defect or deformity, serious dysfunction or complications, there is a special medical dependency, or part of the self-care or non-living obstacles to self-care. 5.4.2 four-level terms and conditions Where 5.4.1 or one of the following terms are injuries at level four. 1) Moderately intelligent impairment; 2) Severe epilepsy; 3) Psychotic disorders, who are still poorly socialized after 1 year of systemic therapy; 4) Muscle strength of single limbs ≤ 2; level 2;