Withdrawing air to help is for identification of a problem (9)
I believe the answer is:
diagnosis
'identification of a problem' is the definition.
'diagnosis' can be an answer for 'identification' (diagnosis is a kind of identification). I'm unsure of the 'of a problem' bit.
'withdrawing air to help is' is the wordplay.
'withdrawing' says the letters should be written backwards.
'air' becomes 'song' (air can mean a piece of music).
'to help' becomes 'aid' (synonyms).
'song'+'aid'='songaid'
'songaid' written backwards gives 'diagnos'.
'diagnos'+'is'='DIAGNOSIS'
'for' is the link.
Can you help me to learn more?
(Other definitions for diagnosis that I've seen before include "Interpretation of" , "Identification of an illness" , "Identification of disease" , "Doctor's verdict" , "analysis" .)