ICD-10-CM > V00-Y99 > Y90-Y99 > Y93 > Y93.8 Y93.8 Activities, other specified Non-Billable/Non-Specific Codes Y93.81Activity, refereeing a sports activityY93.82Activity, spectator at an eventY93.83Activity, rough housing and horseplayY93.84Activity, sleepingY93.85Activity, choking gameY93.89Activity, other specified