The QICore Nutrition Intake profile is based on the R5 NutritionIntake resource. As such, it profiles Basic and adds extensions for necessary fields. I believe there are a few issues with this representation:

• This profile uses code to represent the food item that was consumed, but the Basic.code element is really intended to represent "the 'type' of resource - equivalent to the resource name for other resources." As such, it should be fixed to a code representing NutritionIntake itself. It seems that http://hl7.org/fhir/fhir-types#NutritionIntake would be a good choice, but you'll need to check with the appropriate people to see if using this R5 code is possible and/or correct.
• This profile specifies an event-subject extension, but it is likely more appropriate to constrain the existing Basic.subject element, as this is what that element was intended for.
• This profile represents encounter, occurrence, and status using event extensions, but since it is representing an existing R5 resource, it is more appropriate to use the corresponding cross-version extensions, as these bring in more context and leverage the preferred way of referencing R5 elements from R4. So:
  • replace event-encounter with {{http://hl7.org/fhir/5.0/StructureDefinition/extension-NutritionIntake.encounter }}
  • replace event-occurrence with http://hl7.org/fhir/5.0/StructureDefinition/extension-NutritionIntake.occurrence
  • replace event-status with http://hl7.org/fhir/5.0/StructureDefinition/extension-NutritionIntake.status