E-PRP Eye Drop Billing.. Confused about which code 99070 or A9270 for Medicare

SRCoding

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Hi,
Curious if any other offices are dispensing PRP drops to their patients? We have the patient sign an ABN but when we billed to Medicare using 99070 GY it was denied as bundled in the exam. Should we be using A9270 and wouldn't that be required to be filed to the DMERC? We were thinking GY modifier because its not "considered to be a covered benefit" but I'm thinking now that's incorrect as we do have an ABN on file and investigational/experimental is denied by medicare as not medically necessary... so should I refile with a GA modifier? Would Medicare still deny 99070 as bundled even with a GA modifier?

Anyone have experience with this?

Thanks
Stephanie
 
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