In code it yields Hades, perhaps (5)
I believe the answer is:
deity
'hades perhaps' is the definition.
(I know that Hades is a death deity)
'in code it yields' is the wordplay.
'in' says the answer is hidden in the clue.
'DEITY' can be found hidden inside 'code it yields'.
(Other definitions for deity that I've seen before include "Divinity" , "Supernatural being" , "Supreme being" , "God or goddess" , "Refuge" .)