I have about 10 years in OMS, although I've been out of it for about 2 years now. (I'm going to school for CPC certification). Yes, technically they can bill any of these codes. But in my experience:
Our docs always billed D9920 & D9221 for office sedation
I've never billed the D9241 & D9242 for office sedation
The -47 modifier can be used as well, but it's attached to the CPT code and billed like this example: 41806 for procedure and 41806-47 for anesthesia.
The 00170, 00172,00174,00176 and 00190 can be used as well, but they are medical codes vs. dental codes. If a person is having something as serious as what these codes are used for, then they are usually in a hospital or surgical center. In that case, the anesthesiologist or his group bills for the anesthesia. Just as the facility would bill for facility charges.
With the exception of Medicare, anesthesia by a surgeon should be billed separately. Insurance companies sometimes strictly follow Medicare guidelines, so each company has a different way they want you to bill it. Check with each insurance company. Most dental providers still want it billed using either of the D-codes above.
Your friend should get established on the AAOMS.org website. You have to have a docs pin # or part of his/her social security number. They have all kinds of coding papers, a newsletter that also provides coding info, and it helped me a great deal.
If you or your friend have anything else I could help you with, please email me at email@example.com because I don't check this site often.
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