Need help with posting vitals data to epic

[Hasnain Riaz kayani]

Hi i am using this to send data to epic for the Temp as mentioned in the document i need to use internal code or  LOINC  code that can be different for dev  and prod env i want to know a solution which can be more flexible in terms of using these codes for testing data as i don't want to change them often and secondly i want to post gloucose data i don't know how to do that please guide me on that as well Thanks.

{

    "resourceType": "Observation",

    "category": [{

        "coding": [{

            "system": "http://hl7.org/fhir/observation-category",

            "code": "vital-signs",

            "display": "Vital Signs"

        }]

    }],

    "code": {

        "coding": [{

           "system": "urn:oid:1.2.840.114350.1.13.0.1.7.2.707679",

            "code": "6",

            "display": "Temp"

        }],

        "text": "Temp"

    },

     "encounter": {

        "reference": "Encounter/eucYt0hPWgEMZqybf6t4c.g3"

    },

    "subject": {

        "reference": "Patient/e0w0LEDCYtfckT6N.CkJKCw3",

        "display": "McGinnis, Warren James III"

    },

    "effectiveDateTime": "2024-10-30T12:30:00Z",

    "valueQuantity": {

        "value": 37.0

    }

}