Phase of activity, competition or participation, first 25% of expected event duration

Sibling codes

• XE0QY – Phase of activity, competition or participation, middle 50% of expected event duration
• XE20Y – Phase of activity, competition or participation, events whose time course can not be anticipated
• XE2CG – Phase of activity, competition or participation, last 25% of expected event duration
• XE4ZN – Phase of activity, competition or participation, unspecified stage of the event

Foundation entity

Phase of activity, competition or participation, first 25% of expected event duration – http://id.who.int/icd/entity/177950232