Describe the granularity in medication description

[costateixeira]

We should have a page describing that in medication prescriptions will use some concepts of medication: can be generic, Medicinal Product, Packaged product. While on dispenses, different levels of granularity are expected (most commonly only the package level.

• Align with IDMP - e.g. via UNICOM
• Clarify the use of classification like ATC / WHODrug / ...

[joofio]

some loose ideas here: https://build.fhir.org/ig/IHE/pharm-mpd/branches/master/medication-concepts.html

[joofio]

improved

[costateixeira]

Some remarks:

• pricing on MP?
• the diagram could be clearer in differentiating IDMP and other concepts
• Also indicate how this relates to DM+D concepts (VMP, VMPP, AMP, etc)
• Medicinal product in IDMP may not be Medicinal Product in Belgium, for example.
• Give context: Start narrative by explaining that in a prescription we specify the product by code, identifier, or set of attributes. Then develop into how this granularity appears normally.
• Clarify "brand" vs "generic" - that may not be universally defined.
• Show that in prescription we may use more granularity levels than in dispense, because dispense is always a physical product.
• Can we add the link/relationship to dosage ? (see Dosage Instructions #18 )

@joofio and @rlindstrm can continue the discussion.

[costateixeira]

I also think it might make sense to have a simple table(?) of the levels of granularity of medication in different contexts.
For exmple in prescription you can use MPD, PhP, generic, PC, etc. On allergies you could even use ATC. on dispensing it would be Packaged product or similar/lower