Yearns for services to cover hospital (5)
I believe the answer is:
aches
'yearns' is the definition.
('ache' can be a synonym of 'yearn')
'services to cover hospital' is the wordplay.
'services' becomes 'aces' (ace is a kind of service).
'to cover' means one lot of letters goes inside another.
'hospital' becomes 'h'.
'aces' going around 'h' is 'ACHES'.
'for' acts as a link.
(Other definitions for aches that I've seen before include "Pains, hurts" , "Dull prolonged pains" , "Constant pains" , "Dull persistent pains" , "Hurts; yearns" .)