United States Employee Identification Number

http://hl7.org/fhir/sid/us-tin

2.16.840.1.113883.4.4 (verify!)

SB(US)

An Employer Identification Number (EIN) is also known as a Federal Tax Identification Number (TIN), and is used to identify a business entity. The TIN is represented in FHIR resources with dashes removed

Use case for use as an business Identifier for Organization. ( e.g. DaVinci, Provider Directory)