Submitting claims for reimbursement to Medicare and Medicaid for compounded pain creams made using bulk-powders but representing the pain creams were made using tablet, capsule or liquid forms could land you in big trouble.

 https://www.fbi.gov/minneapolis/press-releases/2015/bloomington-pain-management-doctor-indicted-for-accepting-kickbacks-as-part-of-large-scale-health-care-fraud-scheme