36410 "Published Diagnosis"

We have a pediatrician who is billing 36410 alone when she needs a glucose test. No office visit, no lab charge. The diagnosis code she is using is 790.29. Our Medicaid HMO is denying the charge stating that we are not using the published diagnosis per CMS guidelines. I cannot find an LCD or NCD regarding this. Anyone have a clue?

All help is greatly appreciated.

Thank you in advance!
Cindy

36410 "Published Diagnosis"