Pharmacy Service Providers / 1835I0206X
Individual · specialization
1835I0206X Infectious Diseases Pharmacist
1835I0206X is the taxonomy code for Infectious Diseases, a specialization of Pharmacist, in the NUCC group “Pharmacy Service 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 1835I0206X
- 2Level Specialization
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 19
Definition
A licensed pharmacist who has demonstrated specialized knowledge and skill in the use of microbiology and pharmacology to develop, implement, and monitor drug regimens that incorporate antimicrobials to optimize therapy for patients.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 1835I0206X sits
- Group: Pharmacy Service Providers — code 9 of 19 in the group
- Classification: Pharmacist 183500000X
- Specialization: Infectious Diseases 1835I0206X
Choose 1835I0206X over the general Pharmacist code (183500000X) when the provider's training or certification is specifically in infectious diseases; 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
1835I0206X 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 | Pharmacist — other specializations |
|---|---|
| 1835E0208X | Emergency Medicine |
| 1835G0000X | General Practice |
| 1835G0303X | Geriatric |
| 1835N0905X | Nuclear |
| 1835N1003X | Nutrition Support |
| 1835X0200X | Oncology |
The nearest 6 of 17 other codes under Pharmacist; all are on the group page.
History of 1835I0206X
NUCC's notes record no dated changes for 1835I0206X. The code set is republished every January and July, when codes are added, retitled or marked inactive; this page reflects version 26.1, so check the NUCC site if you are reading it after the next release.
Similar codes in other groups
If 1835I0206X 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:
- 207RI0200X Infectious Disease Physician (Allopathic & Osteopathic Physicians)
- 207WX0120X Cornea and External Diseases Specialist Physician (Allopathic & Osteopathic Physicians)
- 2080P0208X Pediatric Infectious Diseases Physician (Allopathic & Osteopathic Physicians)
Find providers with 1835I0206X
Using 1835I0206X
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.