Question: Can we use code 77334 for cushions used during radiation therapy? Florida Subscriber Answer: You are correct in using code 77334 for cushions during radiation therapy. The code 77334 (Treatment devices, design and construction; complex [irregular blocks, special shields, compensators, wedges, molds or casts]) applies to cushions, foams, eye shields and thermoplastics used during radiation therapy. Don’t Forget: Always check the National Correct Coding Initiative (CCI) edits when multiple codes are reported during the same encounter.