Hospital is on trauma scramble (10)
I believe the answer is:
sanatorium
'hospital' is the definition.
(sanatorium is a kind of hospital)
'is on trauma scramble' is the wordplay.
'scramble' indicates an anagram.
'is'+'on'+'trauma'='isontrauma'
'isontrauma' is an anagram of 'SANATORIUM'.
(Other definitions for sanatorium that I've seen before include "Convalescent hospital" , "health farm" , "convalescent home" , "Health resort" .)