FHIR Get Person ID from Cerner ID

[Jean Minnaar]

How can I get the Person ID if I have the Cerner ID?

There are two patient identifiers in Cerner and I need to get the Person ID when I have the one called Cerner ID.  I can get the Cerner ID if I have the Person ID, but I need it the other way round.

Thank you

[Richard Braman]

by Cerner Id do you mean the Medical Record Number?

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Richard Braman

FHIRFLY

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Fly Health, LLC

https://fly.health

[Minnaar, Jean]

No.  There are two patient ids in cerner, the Cerner ID and the Person ID.  A patient can have multiple MRNs.  Not asking about MRNs.  The two IDs I mentioned, are unique patient identifiers.

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[Minnaar, Jean]

Does this help?

[Richard Braman]

You query Patient by identifier, using the code system and the code for the cernerid, and the id of the Returned FHIR resource is the Person ID.

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[Minnaar, Jean]

Thank you.  And what be the code for the cernerid?

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[Michael Spohnholtz WA-Seattle]

Thanks for the screen shots!  So using FHIR lookup patient by "Person_id" (51474901).  This is an example from our non-prod domain (just identifiers section):

https://fhir-ehr.sandboxcerner.com/r4/ebf18e21-19d8-4746-a637-f0cdd46dae9f/Person?_id=198423033

    "id": "CI-2376519246-6",
                        "use": "usual",
                        "type": {
                            "coding": [
                                {
                                    "system": "https://fhir.cerner.com/ebf18e21-19d8-4746-a637-f0cdd46dae9f/codeSet/4",
                                    "code": "10",
                                    "display": "MRN",
                                    "userSelected": true
                                },
                                {
                                    "system": "http://terminology.hl7.org/CodeSystem/v2-0203",
                                    "code": "MR",
                                    "display": "Medical record number",
                                    "userSelected": false
                                }
                            ],
                            "text": "MRN"
                        },
                        "system": "urn:oid:2.16.840.1.113883.3.1910.100.1",
                        "value": "2222222",
                        "period": {
                            "start": "2022-07-27T14:48:38.000Z"
                        }

If an OID was assigned to the alias pool (si_manager.exe) then you could search by a very specific identifier, like:

https://fhir-ehr.sandboxcerner.com/r4/ebf18e21-19d8-4746-a637-f0cdd46dae9f/Patient?identifier=urn:oid:2.16.840.1.113883.3.1910.100.1|2222222

So use my first example and search by person_id and "look" at the response payload for identifiers to find your "Cerner ID" (which is type "referring MRN").

-----MAS