| | | observation_id | :heavy_check_mark: |This id is generated for each condition resource automatically. |
| subject.reference or <br> subject.identifier.value | | person_id | :heavy_check_mark: | The patient reference is used to search for the person_id in PERSON. |
| | |observation_concept_id| :heavy_check_mark: | SNOMED-code from observation_source_value <br> CONCEPT.concept_id WHERE CONCEPT.concept_code = observation_source_value AND CONCEPT.vocabulary_id = 'SNOMED' |
|recordedDate or <br> onsetPeriod.start or <br> onsetDateTime.value | :heavy_check_mark: <br><br> |observation_date|:heavy_check_mark: | |
|recordedDate or <br> onsetPeriod.start or <br> onsetDateTime.value | :heavy_check_mark: <br><br> |observation_datetime| | |
| encounter.reference or <br> encounter.identifier.value | | visit_occurrence_id | | The encounter reference is used to search for the visit_occurrence_id in VISIT_OCCURRENCE. |