Goal

{
  "resourceType" : "Goal",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "identifier" : [{ Identifier }], // External Ids for this goal
  "lifecycleStatus" : "<code>", // R!  proposed | planned | accepted | active | on-hold | completed | cancelled | entered-in-error | rejected
  "achievementStatus" : { CodeableConcept }, // in-progress | improving | worsening | no-change | achieved | sustaining | not-achieved | no-progress | not-attainable
  "category" : [{ CodeableConcept }], // E.g. Treatment, dietary, behavioral, etc.
  "priority" : { CodeableConcept }, // high-priority | medium-priority | low-priority
  "description" : { CodeableConcept }, // R!  Code or text describing goal
  "subject" : { Reference(Patient|Group|Organization) }, // R!  Who this goal is intended for
  // start[x]: When goal pursuit begins. One of these 2:
  "startDate" : "<date>",
  "startCodeableConcept" : { CodeableConcept },
  "target" : [{ // C? Target outcome for the goal
    "measure" : { CodeableConcept }, // C? The parameter whose value is being tracked
    // detail[x]: The target value to be achieved. One of these 7:
    "detailQuantity" : { Quantity },
    "detailRange" : { Range },
    "detailCodeableConcept" : { CodeableConcept },
    "detailString" : "<string>",
    "detailBoolean" : <boolean>,
    "detailInteger" : <integer>,
    "detailRatio" : { Ratio },
    // due[x]: Reach goal on or before. One of these 2:
    "dueDate" : "<date>"
    "dueDuration" : { Duration }
  }],
  "statusDate" : "<date>", // When goal status took effect
  "statusReason" : "<string>", // Reason for current status
  "expressedBy" : { Reference(Patient|Practitioner|PractitionerRole|
   RelatedPerson) }, // Who's responsible for creating Goal?
  "addresses" : [{ Reference(Condition|Observation|MedicationStatement|
   NutritionOrder|ServiceRequest|RiskAssessment) }], // Issues addressed by this goal
  "note" : [{ Annotation }], // Comments about the goal
  "outcomeCode" : [{ CodeableConcept }], // What result was achieved regarding the goal?
  "outcomeReference" : [{ Reference(Observation) }] // Observation that resulted from goal
}