The proposed vocabulary additions need clear definitions and conventions to be useful.
What's the definition for "other specialized units"? Office Visit needs to be distinguished from the Outpatient Visit. Why isn't Urgent Care an "other specialized unit"?
I agree the distinction is ambiguous. We need better definitions. I mapped Skilled Nursing Facility to Long Term Care based on the term for Concept Name = "Long Term Care Visit". From Usagi:
Long Term Care Visit has a term name = Non-acute institutional stay. In my opinion, SNF, Rehab, LTC, etc. fall under the Non-acute institutional stay definition.
I still don't understand the definition for an "intensive care visit". I know the definition for the care site "intensive care". The link you provide gives the definition for an intensive care Care Site. It seems that care sites and visits are being combined.