Given a list of findings, this function returns the maximum finding
Immunization findings can have associated contraindications and refusals.
To use them in the MAX_DATE function, precede the finding numbers with a
'C' or 'R'. For example, if finding 1 and finding 2 are immunizations and
we need to find the most recent contraindication date of the two
immunizations you would use:
date, which will be the most recent date. Note: MAX_DATE and MRD are
equivalent functions. An example of a function finding using
This would be true if the maximum date of findings 1 and 3 is greater
than the maximum date of findings 2 and 4.