Base cracking intricate codes? I see (7)
I believe the answer is:
diocese
'see' is the definition.
(both can mean a bishop's associated area)
'base cracking intricate codes? i' is the wordplay.
'base' becomes 'e' (I've seen this in other clues).
'cracking' means one lot of letters goes inside another (inserted letters go into a gap or crack).
'intricate' indicates anagramming the letters.
'codes'+'i'='codesi'
'codesi' anagrammed gives 'diocse'.
'e' placed into 'diocse' is 'DIOCESE'.
(Other definitions for diocese that I've seen before include "District under a bishop's jurisdiction" , "Jurisdiction of a bishop" , "District under care of bishop" , "Bishop's see" , "I see cod (anag)" .)