The NutritionOrder resource requires guidance about when it should be used and when other resources are more appropriate. Nutrition includes:

• Substances - i.e., specific consumable items each of which should have some metadata associated - is this something that should be addressed with SupplyDelivery?

• notDoneReason - something that should be ordered/requested that might be avoided for a specific reason - and that reason should be captured as part of the clinical record to support other users and clinical decision support activities. notDoneReason is not present in the NutritionOrder resource

Since NutritionOrder seems to address 3 potential use cases -

• a complete oral diet

• an order for a nutritonal supplement

• an order for enteral feedings

However, the modeling is not clear about how to address specific substances, or administration of specific substances.

Other resources include boundaries and relationships. Such guidance and advice is required to assure consistency for modeling nutrition and dietary substances.