moving patient and encounter into hook-specific context

Author: Matt Berther

docs/specification/1.0.md

@@ -111,8 +111,6 @@ Field | Priority | Description
 `fhirServer` | OPTIONAL | *URL*.  The base URL EHR's [FHIR](https://www.hl7.org/fhir/) server. If fhirAuthorization is provided, this field is REQUIRED.  The scheme should be `https`
 `fhirAuthorization` | OPTIONAL | *object*. A structure holding an OAuth 2.0 bearer access token granting the CDS Service access to FHIR resources, along with supplemental information relating to the token. See the [FHIR Resource Access](#fhir-resource-access) section for more information.
 `user` | REQUIRED | *string*.  The FHIR resource type + id representing the current user.<br />The type is one of: [Practitioner](https://www.hl7.org/fhir/practitioner.html), [Patient](https://www.hl7.org/fhir/patient.html), or [RelatedPerson](https://www.hl7.org/fhir/relatedperson.html).<br />For example, `Practitioner/123`
-`patient` | REQUIRED | *string*.  The FHIR `Patient.id` of the current patient in context
-`encounter` | OPTIONAL | *string*.  The FHIR `Encounter.id` of the current encounter in context
 `context` | REQUIRED | *object*.  Hook-specific contextual data that the CDS service will need.<br />For example, with the `medication-prescribe` hook this will include [MedicationOrder](https://www.hl7.org/fhir/medicationorder.html) being prescribed.
 `prefetch` | OPTIONAL | *object*.  The FHIR data that was prefetched by the EHR (see more information below)
 
@@ -145,9 +143,10 @@ curl
      "subject" : "cds-service4"
    },
    "user" : "Practitioner/example",
-   "context" : [],
-   "patient" : "1288992",
-   "encounter" : "89284",
+   "context" : {
+       "patient" : "1288992",
+       "encounter" : "89284"
+   },
    "prefetch" : {
       "patientToGreet" : {
          "response" : {