Stage 1

Sibling codes

• XS00 – Stage 3
• XS0G – Stage 8
• XS2C – Stage 9
• XS2X – Stage 10
• XS3T – Stage 3a
• XS4D – Stage 2a
• XS52 – Stage 7
• XS5S – Stage 2
• XS6D – Stage 2b
• XS6G – Stage 4
• XS88 – Stage 6
• XS90 – Stage 3b
• XS9N – Stage 5

Foundation entity

Stage 1 – http://id.who.int/icd/entity/1234750028