Dental Providers / 1223D0004X
Individual · specialization
1223D0004X Dental Anesthesiology
1223D0004X is the taxonomy code for Dental Anesthesiology, a specialization of Dentist, in the NUCC group “Dental Providers”. It is a code for individual providers — the kind used on a Type 1 NPI. It has no entry in the CMS Medicare taxonomy crosswalk.
- 1Taxonomy code 1223D0004X
- 2Level Specialization
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 20
Definition
A dentist who has successfully completed an accredited postdoctoral anesthesiology residency training program for dentists of two or more years duration, in accord with Commission on Dental Accreditation's Standards for Dental Anesthesiology Residency Programs, and/or meets the eligibility requirements for examination by the American Dental Board of Anesthesiology.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 1223D0004X sits
- Group: Dental Providers — code 7 of 20 in the group
- Classification: Dentist 122300000X
- Specialization: Dental Anesthesiology 1223D0004X
Choose 1223D0004X over the general Dentist code (122300000X) when the provider's training or certification is specifically in dental anesthesiology; the general code covers the classification as a whole. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
1223D0004X has no entry in the CMS Medicare Provider and Supplier Taxonomy Crosswalk. That usually means Medicare does not enroll this kind of provider under its own specialty — the provider can still hold an NPI and use this code on claims to other payers.
Related codes
| Code | Dentist — other specializations |
|---|---|
| 122300000X | Dentist |
| 1223D0001X | Dental Public Health |
| 1223E0200X | Endodontics |
| 1223G0001X | General Practice |
The nearest 4 of 13 other codes under Dentist; all are on the group page.
History of 1223D0004X
1223D0004X was added to the code set in 2013.
- 2013-01-01 — new
Similar codes in other groups
If 1223D0004X is not quite right, these codes in other groups share a word with it — often the same field practised by a different kind of provider:
- 207L00000X Anesthesiology Physician (Allopathic & Osteopathic Physicians)
- 207LP3000X Pediatric Anesthesiology Physician (Allopathic & Osteopathic Physicians)
- 261QD0000X Dental Clinic/Center (Ambulatory Health Care Facilities)
- 292200000X Dental Laboratory (Laboratories)
Find providers with 1223D0004X
Using 1223D0004X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV). Checked 2026-10-24. Methodology.