New medical system? (7)
I believe the answer is:
decimal
'new' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?
'medical system?' is the wordplay.
'system?' indicates anagramming the letters (another version or system with the same letters).
'medical' is an anagram of 'DECIMAL'.
Can you help me to learn more?
(Other definitions for decimal that I've seen before include "of Number Ten" , "In base ten" , "Based on the number 10" , "(System) based on tens" , "Claimed, wrongly, to have this currency" .)