Existing Wording: More fine-grained filtering can be performed using the metadata and/or terminology hierarchy in Observation.code.

Proposed Wording: remove sentence.

Comment:

This statement in observation.category "More fine-grained filtering can be performed using the metadata and/or terminology hierarchy in Observation.code." seems too complicated and burdensome to a consumer who may or may not have all of the coding system's metadata or the coding system may not be hierarchical in nature.

Summary:

Remove statement about using observation.code hierarchy for category level filtering.