[Observation/Condition] !!! Pre-adopt R5 Bodystructure in profiles

[annabel-uzl]

Hello
I would like to suggest the pre-adoptation of R5 BodyStructure element in the BeProblem and BeObservation profile.

Why R5? R4 and R5 look completely different. The big advantage of R5 (in my opinion) is the fact that you can add/include multiple anatomic locations, while you can only add one in R4. You can also exclude anatomic locations and you can define locations more precise.

Why BodyStructure (and not the existing BodySite) BodyStructure is better for defining more 'complex' locations. For Observations this is specifically handy when defining wounds (ref. #59 ). E.g. we want to define the observation of a burn wound on the upper arm and the index finger and the thumb. Without bodystructure these are three observations (because one observation can only have one bodySite) and we cannot specifically define locations (we need to use precoordinated existing concepts). With BodyStructure (R5) we can define ONE Observation of burn wound and define the locations.
For Conditions the use of BodyStructure is specifically handy for defining the morphology of tumors (see also #37 and #38)

For me, this also rises the question whether we shouldn't continue this pre-adoptation on other resources (e.g. Procedure). One also notices that laterality is part of Bodystructure but I do think it is handy to have both bodySite+BeExtLaterality as well as BodyStructure. I think BodySite+BeExtLaterality will be enough in most of the cases and BodyStructure can be used for the more complex cases.
For the use of BodyStructure in the Procedure resource we don't have a usecase atm, but idk about others.