1, loss of one limb (upper limb above wrist joint and lower limb above ankle joint) is grade 6 disability;

2. One limb is missing (the upper limb is above the elbow joint and the lower limb is above the knee joint);

3. One limb is missing (the upper limb is above the wrist joint and the lower limb is above the ankle joint), and the function of the other limb is lost by more than 50%;

4. One limb completely loses its function. It is a level 5 disability. According to what you say now, it should not reach the level 5 standard. The specific level should be identified in the disability identification center. Legal basis: the appraisal of the degree of disability of workers with work-related injuries and occupational diseases is the national standard for appraising the level of disability. Those who meet the disability assessment standards of Grade 1 to Grade 4 will lose their ability to work; Grade five to grade six means that most of them lose their ability to work; Grade seven to ten is partial loss of working ability. Grade I: those who lose their organs or functions completely, other organs can't be replaced, have special medical dependence, and can't take care of themselves completely or mostly; Grade II: those who have serious organ defects or deformities, serious dysfunction or complications, special medical dependence, or most of them can't take care of themselves; Grade III: those who have serious organ defects or deformities, serious dysfunction or complications, special medical dependence, or some of them can't take care of themselves; Grade 4: those with serious organ defects or deformities, serious dysfunction or complications, special medical dependence and self-care; Grade five: most organs are defective or obviously deformed, with serious dysfunction or complications, generally dependent on medical treatment and taking care of themselves; Grade 6: most of the organs are defective or obviously deformed, with moderate dysfunction or complications, generally dependent on medical treatment and taking care of themselves; Grade 7: most organs are defective or deformed, with mild dysfunction or complications, general medical dependence and self-care; Grade 8: partial organ defect, abnormal morphology, mild dysfunction, medical dependence, self-care; Grade 9: those with partial organ defects, abnormal morphology, mild functional impairment, no medical dependence and self-care; 10: partial organ defects, abnormal morphology, no dysfunction, no medical dependence, and self-care. At the same time, according to the fact that work-related injuries and occupational diseases can affect every system and organ, and the disability assessment criteria should cover all major clinical disciplines, the clinical sciences similar or related to human organ systems are divided into five parts, namely:

One: neurology, neurosurgery and psychiatry;

Two: orthopedics, plastic surgery, burn department;

Three: ophthalmology, otolaryngology, stomatology;

Four: general surgery, thoracic surgery, urogenital department (including gynecology);

Part V: Internal medicine of occupational diseases.