condition.py

    fhir = box()
    fhir.resourceType = 'Condition'
    # {"resourceType": "Condition"}
    fhir.id = identifier.value(table='condition_occurrence',
                               code=condition.condition_occurrence_id)
    fhir.verificationStatus = 'unknown'
    fhir.clinicalStatus = 'inactive' if condition.end_date else 'inactive'
    fhir.subject = identifier.ref(resource_type='Patient',
                                  table='person',
                                  code=condition.person_id)
    extract_condition_category(fhir, condition)
    with fhir.code.coding[0] as c:
        c.system = vocabulary.guess_system(vocabulary_id=condition.condition_concept_vocabulary_id)
        c.code = condition.condition_concept_code
        c.display = condition.condition_concept_name
    fhir.onsetDateTime = condition.start_date
    if condition.end_date:
        fhir.abatementDateTime = condition.end_date
    # columns which we don't know how to map exactly
    ext = lambda attr, type: extension.column(table='condition_concept_id',
                                              column=attr,
                                              value=getattr(condition, attr),
                                              type=type)
    columns = [
        ('condition_source_value', 'String'),
        ('condition_source_concept_id', 'Integer'),
        ('condition_status_source_value', 'String'),
        ('condition_status_concept_id', 'Integer'),
    ]
    for column, type in columns:
        push(fhir.extension, ext(column, type))
    return unbox(fhir)