Hi Guest!

It depends on what all services will be provided, but here are some common CPT codes associated with all on four:

Implants:
21248 - Reconstruction of mandible or maxilla, endosteal implant (eg, blade, cylinder); partial (3 or less)
21249 - Reconstruction of mandible or maxilla, endosteal implant (eg, blade, cylinder); complete (4 or more)


Bone grafts:
21210 - Graft, bone; nasal, maxillary or malar areas (includes obtaining graft)
21215 - Graft, bone; mandible (includes obtaining graft)
**use modifier -52 for reduced services when bone is not obtained from patient


Anesthesia:
00170 - Anesthesia for intraoral procedures, including biopsy; not otherwise specified


Moderate sedation:
99152
Moderate sedation services provided by the same physician or other qualified health care professional performing the diagnostic or therapeutic service that the sedation supports, requiring the presence of an independent trained observer to assist in the monitoring of the patient’s level of consciousness and physiological status; initial 15 minutes of intraservice time, patient age 5 years or older
99153
Moderate sedation services provided by the same physician or other qualified health care professional performing the diagnostic or therapeutic service that the sedation supports, requiring the presence of an independent trained observer to assist in the monitoring of the patient’s level of consciousness and physiological status; each additional 15 minutes intraservice time (list separately in addition to code for primary service)


Extractions:
Extractions actually do not have direct crosscode - so you can either bill the "D" code on the medical claim (many insurers these days will process "D" codes when they are medically necessary services), or you can use the CPT code below and include a narrative report describing the procedure:
41899 - Unlisted procedure, dentoalveolar structures


Hope this helps!

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