| Patient | Provider’s patient identifier system and value | Yes — one Patient per unique patient. |
| Practitioner | The specific medication record | No — the same real-world prescriber appears as a separate resource for every medication they prescribed. |
| PractitionerRole | The specific medication record | No — same caveat as Practitioner. |
| Location | The specific medication record | No — applies to both the prescriber’s office and the pharmacy; the same address or pharmacy is not deduplicated across medications. |
| Medication | Product code, drug description, form code, and strength | Yes — identical medications collapse into a single resource, shared across every MedicationRequest/MedicationDispense that references them. |
| MedicationRequest | Patient, written date, product code, drug description, directions, strength, refills, and quantity prescribed | Yes, if all of those fields match another record. |
| MedicationDispense | Patient, last filled date, sold date, product code, drug description, directions, strength, and days supply | Yes, if all of those fields match another record. |
| OperationOutcome | (not applicable) | No stable ID is assigned; treat each occurrence as a standalone informational/error entry rather than a resource to track over time. |
