can we use if then else when declare a cursor?

DECLARE COMP_PROS_CSR CURSOR WITH HOLD FOR
IF ll_c_BCBIDTYPE = 'BDW130010' THEN
begin
SELECT p.PRIMARYKEY, p.CONTACTKEY, p.BCBConstitution
FROM ACCOUNT p
WHERE P.STATUS <> 'BCBCCustom'
AND (P.BCBCONSTITUTION > 'BDW100101' AND P.BCBCONSTITUTION <= 'BDW100999')
AND P.BCBBIZREGNO__ = ll_c_BCBBIZREGNO
ORDER BY lastupdd;
end
ELSE
SELECT p.PRIMARYKEY, p.CONTACTKEY, p.BCBConstitution
FROM ACCOUNT p
WHERE P.STATUS <> 'BCBCCustom'
AND (P.BCBCONSTITUTION > 'BDW100101' AND P.BCBCONSTITUTION <= 'BDW100999')
AND (P.BCBBIZREGNO__ = ll_c_BCBBIZREGNO
OR P.BCBASSOCLUBSOC__ = ll_c_BCBASSOCLUBSOC
OR P.BCBOTHERID__ = ll_c_BCBOTHERID)
AND BCBNameMatch = ll_c_NAME
ORDER BY lastupdd;
END IF;