{
  "resourceType": "CodeSystem",
  "status": "draft",
  "content": "not-present",
  "name": "NexusCareElementCS",
  "id": "nexus-care-element",
  "title": "Care Element Measure CodeSystem",
  "description": "Names a chronic-care element on `Goal.target.measure` where the element has no standard code.\n\n**The fallback, not the first choice.** Most care elements are LOINC-coded and a goal names the\nLOINC code, so that a reader outside this platform can tell what is being measured. This system\ncovers the rest -- an element resolved from a vitals catalog key, or a review with no standard\nplace to be recorded -- which have only the identifier their care package gave them.\n\n**Component keys are codes here too.** A compound reading is bounded per component, so a goal on\none states a target naming the element and one target per component, with the component keys\n(`systolic`, `diastolic`) drawn from this system. A component key is meaningful only within the\nelement that declared it and must not be resolved on its own.\n\n**Content is not held in this specification.** Membership is the set of element ids and component\nkeys the chronic-care packages define, and those are application content revised on their own\ncadence. This declares the system's identity and defers its content rather than pinning a snapshot.\nBind extensible.\n\nWhen reading a goal, resolve the element from whatever `measure` carries -- a standard code, a code\nfrom this system, or `measure.text`. Filtering on system refuses two of the three for no gain.",
  "url": "https://fhir.apps.health/CodeSystem/nexus-care-element",
  "experimental": false,
  "caseSensitive": true
}