The difference with the two codes do not pertain to unilateral or bilateral,30801 is for superficial and 30802 is for intramural. But to answer the original question, No 30802 cannot be billed bilaterally. The code description states unilater or bilateral. Below I've listed the code description for both codes.
30801 - Cautery and/or ablation, mucosa of inferior turbinates, unilateral or bilateral, any method; superficial
30802 - Cautery and/or ablation, mucosa of inferior turbinates, unilateral or bilateral, any method; intramural