Charged for being sick in bed (6)
I believe the answer is:
billed
'charged' is the definition.
('bill' can be a synonym of 'charge')
'sick in bed' is the wordplay.
'sick' becomes 'ill' (synonyms).
'in' is an insertion indicator.
'ill' inserted into 'bed' is 'BILLED'.
'for being' is the link.
(Other definitions for billed that I've seen before include "Caressed" , "Listed in a programme; charged" , "Sent an invoice" , "Advertised" .)