Diabetic Inserts

“I read the Medicare DME requirements for diabetic shoes and inserts. I am still confused and am seeking clarity. I know for diabetic shoes, it requires a MD/DO to certify that patient has diabetes with neuropathy and thus, qualifies for diabetic shoes and 3 custom insoles. It is my understanding that Medicare only covers orthotics if the patient is diabetic and as stated above, is certified to have diabetes with neuropathy. I have seen other physicians use the KX modifier to get orthotics incorrectly paid. My question is: If I just want to dispense the custom molded diabetic insoles (three pairs of orthotics/diabetic insoles as allowed by Medicare — and not the shoes), are there separate rules or are they the same rules? Is it legal to do a cash pay for diabetic/soft custom insoles? Any other tips you have found useful in your practice? Have you in your practice just dispensed the insoles and not the shoes?”