This value set includes codes based on the following rules:

• Include these codes as defined in http://snomed.info/sct version http://snomed.info/sct/731000124108/version/20210322

  Code	Display
  21522001	Abdominal pain
  419284004	Change in mental status
  29857009	Chest pain
  43724002	Chills
  40917007	New confusion
  49727002	Cough (new onset or worsening of chronic cough)
  3415004	Pale, gray, or blue-colored skin, lips, or nail beds, depending on skin
  62315008	Diarrhea (3 or more loose stools/24hr period)
  230145002	Difficulty breathing
  271782001	Inability to stay awake
  267036007	Shortness of breath (dyspnea)
  84229001	Fatigue
  103001002	Subjective fever (felt feverish)
  426000000	Fever >100.4F (38C)
  300359004	Vomiting
  25064002	Headache
  77692006	Inability to wake
  44169009	New Olfactory disorder
  36955009	New Taste disorder
  68962001	Muscle aches (myalgia)
  64531003	Runny nose (rhinorrhea)
  422587007	Nausea
  162397003	Sore throat
  38880002	Rigors
  23924001	Persistent pressure in chest
  56018004	Wheezing

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-NullFlavor version 20090501

  Code	Display
  OTH	Other symptom (specify)
  UNK	Unknown