Grade 0

Sibling codes

• XS0K – Grade 4
• XS31 – Grade 2
• XS57 – Grade 10
• XS5M – Grade 7
• XS6F – Grade 3
• XS6P – Grade 1
• XS7F – Grade 8
• XS87 – Grade 5
• XS8J – Grade 9
• XS9M – Grade 6

Foundation entity

Grade 0 – http://id.who.int/icd/entity/1566645271