---
kind: "section"
citation: "45 C.F.R. § 162.610"
title: "45"
number: "162.610"
heading: "Implementation specifications for covered entities."
url: "https://uscodex.org/cfr/45/162.610"
---

# §162.610. Implementation specifications for covered entities.

- (a) The standard unique employer identifier of an employer of a particular employee is the EIN that appears on that employee's IRS Form W-2, Wage and Tax Statement, from the employer.
- (b) A covered entity must use the standard unique employer identifier (EIN) of the appropriate employer in standard transactions that require an employer identifier to identify a person or entity as an employer, including where situationally required.
- (c) **Required and permitted uses for the Employer Identifier.**
  - (1) The Employer Identifier must be used as stated in [§ 162.610(b)](#b).
  - (2) The Employer Identifier may be used for any other lawful purpose.

## Notes

### Amendments

[67 FR 38020, May 31, 2002, as amended at 69 FR 3469, Jan. 23, 2004]

### Source

Source: 67 FR 38020, May 31, 2002, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 1320d—1320d-9 and secs. 1104 and 10109 of Pub. L. 111-148, 124 Stat. 146-154 and 915-917.

### Source

Source: 65 FR 50367, Aug. 17, 2000, unless otherwise noted.

### Amendments

[67 FR 38020, May 31, 2002, as amended at 69 FR 3469, Jan. 23, 2004]