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app/assets/javascripts/core.js.coffee

@@ -272,6 +272,11 @@ class hQuery.Facility extends hQuery.CodedValue
   ###
   endDate: -> @_endDate
 
+  ###*
+  The length of stay in this facility in seconds
+  @returns {Integer}
+  ###
+  lengthOfStay: -> @json['end_time'] - @json['start_time']
 
   ###*
   @returns {Array} an array of {@link hQuery.Address} objects associated with the facility

app/assets/javascripts/medicalequipment.js.coffee

@@ -26,3 +26,9 @@ class hQuery.MedicalEquipment extends hQuery.CodedEntry
   @returns {CodedValue}
   ###
   anatomicalStructure: -> new hQuery.CodedValue @json['anatomicalStructure']['code'], @json['anatomicalStructure']['codeSystem']
+
+  ###*
+  Currently mapped to the end date for the medical equipment
+  @returns {Date}
+  ###
+  removalDateTime: -> @endDate()

app/assets/javascripts/procedure.js.coffee

@@ -25,4 +25,9 @@ class hQuery.Procedure extends hQuery.CodedEntry
   @returns {hQuery.CodedValue} A SNOMED code indicating the body site on which the 
   procedure was performed
   ###
-  site: -> new hQuery.CodedValue @json['site']['code'], @json['site']['codeSystem']
+  site: -> new hQuery.CodedValue @json['site']['code'], @json['site']['codeSystem']
+
+  ###*
+  @returns {Date} Date/Time when the incision was made during a procedure, if applicable
+  ###
+  incisionDateTime: -> hQuery.dateFromUtcSeconds @json['incisionDateTime']

test/fixtures/patient/barry_berry.json

@@ -77,6 +77,8 @@
       },
       "facility": {
         "name": "General Hospital",
+        "start_time": 1124956803,
+        "end_time": 1124957003,
         "code": {
           "code": "1155-1",
           "codeSystem": "HL7 Healthcare Service Location"
@@ -217,7 +219,8 @@
           "last": "Tables"
         }
       },
-      "description": "Colonscopy"
+      "description": "Colonscopy",
+      "incisionDateTime": 1073238725
     }
   ],
   "results": [

test/unit/patient_api_test.rb

@@ -51,6 +51,7 @@ def test_encounters
     assert_equal 'CPT', @context.eval('patient.encounters()[0].reasonForVisit().type()[0].codeSystemName()')
     assert_equal 'HL7 Healthcare Service Location', @context.eval('patient.encounters()[0].facility().codeSystemName()')
     assert_equal '1155-1', @context.eval('patient.encounters()[0].facility().code()')
+    assert_equal 200, @context.eval('patient.encounters()[0].facility().lengthOfStay()')
     assert_equal 'General Hospital', @context.eval('patient.encounters()[0].facility().name()')
   end
 
@@ -66,6 +67,7 @@ def test_procedures
     assert_equal '71854001', @context.eval('patient.procedures()[0].site().code()')
     assert_equal 'Bobby', @context.eval('patient.procedures()[0].performer().person().given()')
     assert_equal 'Tables', @context.eval('patient.procedures()[0].performer().person().last()')
+    assert_equal 1073238725000, @context.eval('patient.procedures()[0].incisionDateTime().getTime()')
   end
 
   def test_vital_signs
@@ -173,6 +175,7 @@ def test_functional_status
   def test_medical_equipment
     assert_equal 1, @context.eval('patient.medicalEquipment().length')
     assert_equal '13648007', @context.eval('patient.medicalEquipment()[0].anatomicalStructure().code()')
+    assert_equal 1269762693000, @context.eval('patient.medicalEquipment()[0].removalDateTime().getTime()')
   end
 
 end