This case-insensitive code system http://hl7.org/fhir/v2/0717 defines the following codes:
| Code | Display |
| ALL | All |
| DEM | All demographic data |
| DRG | Drug |
| HIV | HIV status and results |
| LOC | Patient Location |
| NO | None |
| OI | Opt in all registries (HIPAA) |
| OO | Opt out all registries (HIPAA) |
| PID-17 | Religion |
| PID-7 | Date of Birth |
| PSY | Psychiatric Mental health |
| SMD | Sensitive medical data |
| STD | Sexually transmitted diseases |