In the STU3 Ballot #1 of the Structured Data Capture (SDC) Implementation Guide for Adaptive Questionnaire (http://hl7.org/fhir/uv/sdc/2018Sep/adaptive.html), the data given in the examples seem to be incorrect.

In step 3, the first item returned has a "type" as "question". It should be "choice". And "answerValueSet" and "answerOption" should not both present. See below:

//First Item being sent back "item": [ { "linkId": "1.1" // unique id of the question within the questionnaire "code" :

{ "system": "[http://loinc.org]", "code": "LA1", }

"text": "Are you able to walk for 30 minutes ?", "type": "question", "answerValueSet": "http://loinc.org/LA1234" "answerOption": [ "valueCoding": { } ] // answer option } // item ]

In step 5, the first item being sent back with answer, the captured answer should be in a QuestionnaireReponse, not in the "answerOption" field of a Questionnaire. See below.

//First Item being sent back with answer to be used to determine completeness or next question. "item": [ { "linkId": "1.1" // unique id of the question within the questionnaire "code" :

{ "system": "[http://loinc.org]", "code": "LA1", }

"text": "Are you able to walk for 30 minutes ?", "type": "question", "answerValueSet": "http://loinc.org/LA1234" "answerOption": [ "valueCoding":

{ "system": "[http://loinc.org]", "code": "LA1234" }

] // answer option } // item