Suppliers / 331L00000X
Non-Individual · classification
331L00000X Blood Bank
331L00000X is the taxonomy code for Blood Bank, in the NUCC group “Suppliers”. It is a code for organizations — the kind used on a Type 2 NPI. It has no entry in the CMS Medicare taxonomy crosswalk.
- 1Taxonomy code 331L00000X
- 2Level Classification
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 31
Definition
An institution (organization or distinct part thereof) that performs, or is responsible for the performance of, the collection, processing, storage and/or issuance of human blood and blood components, intended for transfusion. The institution may also collect, process, and/or distribute human tissue, including bone marrow and peripheral blood progenitor cells, intended for transplantation.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 331L00000X sits
- Group: Suppliers — code 1 of 31 in the group
- Classification: Blood Bank 331L00000X
Blood Bank has no specializations, so 331L00000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
331L00000X 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 — organizations of this type enroll, if at all, under a facility or supplier type rather than a practitioner specialty.
Related codes
No other codes share the classification Blood Bank. The rest of Suppliers is on the group page.
History of 331L00000X
NUCC's notes record no dated changes for 331L00000X. 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 331L00000X 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:
- 207ZB0001X Blood Banking & Transfusion Medicine Physician (Allopathic & Osteopathic Physicians)
- 246QB0000X Blood Banking Specialist/Technologist (Technologists, Technicians & Other Technical Service Providers)
Find providers with 331L00000X
Using 331L00000X
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.