This case-sensitive code system http://hl7.org/fhir/group-type defines the following codes:
| Code | Display | Definition |
| person | Person | Group contains "person" Patient resources |
| animal | Animal | Group contains "animal" Patient resources |
| practitioner | Practitioner | Group contains healthcare practitioner resources |
| device | Device | Group contains Device resources |
| medication | Medication | Group contains Medication resources |
| substance | Substance | Group contains Substance resources |