Can I get into trouble for insurance fraud by following my employer's orders on filing claims?

I work for a dental office. My employer wants me to charge a patient for a procedure their insurance company (for which my office is a preferred provider) denied and says is not billable to the patient. He also wants me to block insurance claims from being sent out to companies we've signed on as a preferred provider with when we know insurance will deny the claim and show not billable to patient. Is this considered fraud? Can I, personally, get into legal trouble?