| 18 | Plan Number. |
| 1L | Group or Policy Number. -- Use this code only if it cannot be determined if the number is a Group Number or a Policy Number. Use codes “IG” or “6P” when they can be determined. |
| 1W | Member Identification Number. -- Use only after the Unique Patient Identifier is available and has been provided in the NM109, but use of the UPI has not been mandated. |
| 3H | Case Number. |
| 49 | Family Unit Number. -- Suffix to the Subscriber’s Member Identification Number. This suffix allows the information source to use one identification number as the base number for each family member. The suffix identifies the individual family member. Only the suffix is to be entered here. The Member Identification Number is to be entered in Loop 2100C NM109 or REF02. If the complete Member Identification Number with the suffix is entered in Loop 2100C NM109 or REF02, the suffix should not be entered here. |
| 6P | Group Number. |
| A6 | Employee Identification Number. |
| CT | Contract Number. -- This code is to be used only to identify the provider’s contract number of the provider identified in the PRV segment of Loop 2100C. This code is only to be used once the HCFA National Provider Identifier has been mandated for use, and must be sent if required in the contract between the Information Receiver identified in Loop 2100B and the Information Source identified in Loop 2100A. |
| EA | Medical Record Identification Number. |
| EJ | Patient Account Number. |
| F6 | Health Insurance Claim (HIC) Number. |
| GH | Identification Card Serial Number. -- Use this code when the Identification Card has a number in addition to the Member Identification Number or Identity Card Number. The Identification Card Serial Number uniquely identifies the card when multiple cards have been or will be issued to a member ( e.g., on a monthly basis, replacement cards ). This is particularly prevalent in the Medicaid environment. |
| HJ | Identity Card Number. -- Use this code when the Identity Card Number is different than the Member Identification Number. This is particularly prevalent in the Medicaid environment. |
| IG | Insurance Policy Number. |
| N6 | Plan Network Identification Number. |
| NQ | Medicaid Recipient Identification Number. |
| SY | Social Security Number. -- The social security number may not be used for any federally administered programs such as Medicare. |
