Nursing Service Providers / 164W00000X
Individual · classification
164W00000X Licensed Practical Nurse
164W00000X is the taxonomy code for Licensed Practical Nurse, in the NUCC group “Nursing 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 164W00000X
- 2Level Classification
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 59
Definition
An individual with post-high school vocational training and practical experience in the provision of nursing care at a level less than that required for certification as a Registered Nurse. Requirements for education, experience, licensure, and job responsibilities vary among the states.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 164W00000X sits
- Group: Nursing Service Providers — code 1 of 59 in the group
- Classification: Licensed Practical Nurse 164W00000X
Licensed Practical Nurse has no specializations, so 164W00000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
164W00000X 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
No other codes share the classification Licensed Practical Nurse. The rest of Nursing Service Providers is on the group page.
History of 164W00000X
NUCC's notes record no dated changes for 164W00000X. 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 164W00000X 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:
- 376K00000X Nurse's Aide (Nursing Service Related Providers)
- 364S00000X Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers)
- 367500000X Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers)
- 363L00000X Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers)
Find providers with 164W00000X
Using 164W00000X
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.