This value set has an inline code system http://hl7.org/fhir/substance-category, which defines the following codes:
Code
|
Display
|
Definition
|
allergen
|
Allergen |
A substance that causes an allergic reaction. |
biological
|
Biological Substance |
A substance that is produced by or extracted from a biological source. |
body
|
Body Substance |
A substance that comes directly from a human or an animal (e.g. blood, urine, feces, tears, etc.). |
chemical
|
Chemical |
Any organic or inorganic substance of a particular molecular identity, including -- (i) any combination of such substances occurring in whole or in part as a result of a chemical reaction or occurring in nature and (ii) any element or uncombined radical (http://www.epa.gov/opptintr/import-export/pubs/importguide.pdf). |
food
|
Dietary Substance |
A food, dietary ingredient, or dietary supplement for human or animal. |
drug
|
Drug or Medicament |
A substance intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease in man or other animals (Federal Food Drug and Cosmetic Act). |
material
|
Material |
A finished product which is not normally ingested, absorbed or injected (e.g. steel, iron, wood, plastic and paper). |