• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-TimingEvent version 2018-08-12

  Code	Display	Definition
  AC	AC	before meal (from lat. ante cibus)
  ACD	ACD	before lunch (from lat. ante cibus diurnus)
  ACM	ACM	before breakfast (from lat. ante cibus matutinus)
  ACV	ACV	before dinner (from lat. ante cibus vespertinus)
  CD	CD	**Description:** lunch (from lat. cibus diurnus)
  CM	CM	**Description:** breakfast (from lat. cibus matutinus)
  CV	CV	**Description:** dinner (from lat. cibus vespertinus)
  C	C	**Description:** meal (from lat. ante cibus)
  HS	HS	**Description:** Prior to beginning a regular period of extended sleep (this would exclude naps). Note that this might occur at different times of day depending on a person's regular sleep schedule.
  IC	IC	between meals (from lat. inter cibus)
  ICD	ICD	between lunch and dinner
  ICM	ICM	between breakfast and lunch
  ICV	ICV	between dinner and the hour of sleep
  PC	PC	after meal (from lat. post cibus)
  PCD	PCD	after lunch (from lat. post cibus diurnus)
  PCM	PCM	after breakfast (from lat. post cibus matutinus)
  PCV	PCV	after dinner (from lat. post cibus vespertinus)
  WAKE	WAKE	**Description:** Upon waking up from a regular period of sleep, in order to start regular activities (this would exclude waking up from a nap or temporarily waking up during a period of sleep) **Usage Notes:** e.g. Take pulse rate on waking in management of thyrotoxicosis. Take BP on waking in management of hypertension Take basal body temperature on waking in establishing date of ovulation

This value set expansion contains 18 concepts.