| Code | Description |
|---|---|
| 24 | Employer’s Identification Number |
| 46 | Electronic Transmitter Identification Number (ETIN) |
| F | Federal Taxpayer’s Identification Number |
| NI | National Association of Insurance Commissioners (NAIC) Identification |
| PI | Payer Identification |
| XV | Health Care Financing Administration National PlanID |
| XX | Health Care Financing Administration National Provider Identifier |