This code system http://roche.com/fhir/rdc/cs defines the following codes:

JSON

{
    "resourceType": "CodeSystem",
    "id": "Zqli4zo-1535366956865",
    "meta": {
        "versionId": "1536665728910",
        "lastUpdated": "2018-09-11T11:35:28.910+00:00"
    },
    "url": "http://roche.com/fhir/rdc/cs",
    "version": "1.0.0",
    "name": "RocheCodeSystem",
    "status": "active",
    "experimental": false,
    "date": "2019-10-09",
    "publisher": "Roche",
    "description": "Roche CodeSystem",
    "caseSensitive": true,
    "content": "complete",
    "concept":  [
        {
            "code": "clinical-observation",
            "display": "Clinical Observation"
        },
        {
            "code": "carb-observation",
            "display": "Carbohydrate intake Observation"
        },
        {
            "code": "carb-advice",
            "display": "Carbohydrate advice observation"
        },
        {
            "code": "observation-health-event",
            "display": "Health Event Observation"
        },
        {
            "code": "insulinDose",
            "display": "Insulin Dose"
        },
        {
            "code": "basal",
            "display": "Basal"
        },
        {
            "code": "bolusStd",
            "display": "Standard bolus"
        },
        {
            "code": "bolusExt",
            "display": "Extended bolus"
        },
        {
            "code": "bolusMul",
            "display": "Multiwave bolus"
        },
        {
            "code": "dev.cgm",
            "display": "CGM"
        },
        {
            "code": "dev.cgm.im",
            "display": "CGM Mobile App"
        },
        {
            "code": "smartPhone",
            "display": "Smart Phone"
        },
        {
            "code": "insulinPen",
            "display": "Insulin Pen"
        },
        {
            "code": "EVENT_22",
            "display": "TBR End (cancelled)"
        },
        {
            "code": "EVENT_6",
            "display": "TBR end"
        },
        {
            "code": "EVENT_12",
            "display": "TBR start"
        },
        {
            "code": "EVENT_1",
            "display": "Run"
        }
    ]
}