Other Service Providers / 171W00000X
Individual · classification
171W00000X Contractor
171W00000X is the taxonomy code for Contractor, in the NUCC group “Other 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 171W00000X
- 2Level Classification
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 38
Definition
For the purposes of the Health Care Provider Taxonomy, a contractor is limited to individuals who do construction or mechanical work to modify a patient's environment to accommodate a health condition. Contractors perform projects including, but not limited to, building wheelchair ramps, widening doorways, modifying personal vehicles, and making other improvements for patient access and movement. This code has no relation to a provider's employment status.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 171W00000X sits
- Group: Other Service Providers — code 5 of 38 in the group
- Classification: Contractor 171W00000X
This is the general code for Contractor. 2 more specific codes sit beneath it; pick one of those when the provider's training or certification matches it, and this one otherwise. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
171W00000X 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 | Contractor — specializations |
|---|---|
| 171WH0202X | Home Modifications |
| 171WV0202X | Vehicle Modifications |
History of 171W00000X
NUCC's notes record no dated changes for 171W00000X. 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.
Find providers with 171W00000X
Using 171W00000X
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.