Can delinquent dental bill be taken out of my payroll check with my authorization?

I have a dental bill that I've been fighting with the dentist and my benefits to cover. Neither one claims to cover the service or offer a resolution. Its now gone to collections and I've received a letter stating it will come out of my payroll check. Is this possible for a dental bill? I thought only federal loans, etc can be taken out of payroll checks, not medical/dental claims.