If a patient comes in for a VFC vaccine, you will bill the MC+ plan $25.00 for the administration under diagnosis code Z02.89, CPT 99211. Then you bill for the vaccine using diagnosis code Z23, CPT 90700 SL (this is the code for DTap) or whatever vaccine, for whatever amount. Use the SL modifier for vaccine provided by VFC.
If your agency purchased the vaccine, i.e., flu vaccine, you will not use the SL modifier.
Do not use the SL modifier when billing for COVID vaccine.
If you use VaxCare or some other vaccine provider service, you will not bill MC+ at all.
Hope this helps. Call me anytime, I’m glad to help! 660/327-4653 x 240