This value set includes codes based on the following rules:

• Include these codes as defined in http://dicom.nema.org/resources/ontology/DCM

  Code	Display	Definition
  121381	Contrast/Bolus Ingredient Opaque	X-Ray absorption of the active ingredient of a contrast agent ingredient is greater than the absorption of water (tissue).
  121380	Active Ingredient Undiluted Concentration	Concentration of the chemically or physically interesting (active) ingredient of a drug or contrast agent as delivered in product form from the manufacturer, typically in mg/ml.

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

  Code	Display
  127489000	Active Ingredient
  118565006	Volume