| Code | Description | Version |
| ACSN | Accession ID | added v2.7 |
| AM | American Express | added v2.3 |
| AMA | American Medical Association Number | added v2.6 |
| AN | Account number | added v2.3 |
| ANC | Account number Creditor | added v2.5 |
| AND | Account number debitor | added v2.5 |
| ANON | Anonymous identifier | added v2.5 |
| ANT | Temporary Account Number | added v2.5 |
| APRN | Advanced Practice Registered Nurse number | added v2.5 |
| ASID | Ancestor Specimen ID | added v2.7 |
| BA | Bank Account Number | added v2.4 |
| BC | Bank Card Number | added v2.5 |
| BCT | Birth Certificate | added v2.6 |
| BR | Birth registry number | added v2.3 |
| BRN | Breed Registry Number | added v2.4 |
| BSNR | Primary physician office number | added v2.7 |
| CC | Cost Center number | added v2.5 |
| CONM | Change of Name Document | added v2.6 |
| CY | County number | added v2.5 |
| CZ | Citizenship Card | added v2.6 |
| DDS | Dentist license number | added v2.5 |
| DEA | Drug Enforcement Administration registration number | added v2.5 |
| DFN | Drug Furnishing or prescriptive authority Number | added v2.5 |
| DI | Diner's Club card | added v2.3 |
| DL | Driver's license number | added v2.3 |
| DN | Doctor number | added v2.3 |
| DO | Osteopathic License number | added v2.5 |
| DP | Diplomatic Passport | added v2.6 |
| DPM | Podiatrist license number | added v2.5 |
| DR | Donor Registration Number | added v2.4 |
| DS | Discover Card | added v2.3 |
| EI | Employee number | added v2.3 |
| EN | Employer number | added v2.3 |
| ESN | Staff Enterprise Number | added v2.6 |
| FI | Facility ID | added v2.3.1 |
| GI | Guarantor internal identifier | added v2.3 |
| GL | General ledger number | added v2.5 |
| GN | Guarantor external identifier | added v2.3 |
| HC | Health Card Number | added v2.4 |
| IND | Indigenous/Aboriginal | added v2.5 |
| JHN | Jurisdictional health number (Canada) | added v2.4 |
| LACSN | Laboratory Accession ID | added v2.7 |
| LANR | Lifelong physician number | added v2.7 |
| LI | Labor and industries number | added v2.5 |
| LN | License number | added v2.3.1 |
| LR | Local Registry ID | added v2.3.1 |
| MA | Patient Medicaid number | added v2.3 |
| MB | Member Number | added v2.5 |
| MC | Patient's Medicare number | added v2.3 |
| MCD | Practitioner Medicaid number | added v2.5 |
| MCN | Microchip Number | added v2.4 |
| MCR | Practitioner Medicare number | added v2.5 |
| MCT | Marriage Certificate | added v2.6 |
| MD | Medical License number | added v2.5 |
| MI | Military ID number | added v2.5 |
| MR | Medical record number | added v2.3 |
| MRT | Temporary Medical Record Number | added v2.5 |
| MS | MasterCard | added v2.3 |
| NBSNR | Secondary physician office number | added v2.7 |
| NCT | Naturalization Certificate | added v2.6 |
| NE | National employer identifier | added v2.3.1 |
| NH | National Health Plan Identifier | added v2.3.1 |
| NI | National unique individual identifier | added v2.3.1 |
| NII | National Insurance Organization Identifier | added v2.5 |
| NIIP | National Insurance Payor Identifier (Payor) | added v2.5 |
| NNxxx | National Person Identifier where the xxx is the ISO table 3166 3-character (alphabetic) country code | added v2.3.1 |
| NP | Nurse practitioner number | added v2.5 |
| NPI | National provider identifier | added v2.3.1 |
| OD | Optometrist license number | added v2.5 |
| PA | Physician Assistant number | added v2.5 |
| PC | Parole Card | added v2.6 |
| PCN | Penitentiary/correctional institution Number | added v2.5 |
| PE | Living Subject Enterprise Number | added v2.5 |
| PEN | Pension Number | added v2.4 |
| PI | Patient internal identifier | added v2.3 |
| PN | Person number | added v2.3.1 |
| PNT | Temporary Living Subject Number | added v2.5 |
| PPIN | Medicare/CMS Performing Provider Identification Number | added v2.6 |
| PPN | Passport number | added v2.5 |
| PRC | Permanent Resident Card Number | added v2.5 |
| PRN | Provider number | added v2.3.1 |
| PT | Patient external identifier | added v2.3 |
| QA | QA number | added v2.5 |
| RI | Resource identifier | added v2.5 |
| RN | Registered Nurse Number | added v2.5 |
| RPH | Pharmacist license number | added v2.5 |
| RR | Railroad Retirement number | added v2.3 |
| RRI | Regional registry ID | added v2.3.1 |
| RRP | Railroad Retirement Provider | added v2.6 |
| SID | Specimen ID | added v2.7 |
| SL | State license | added v2.3.1 |
| SN | Subscriber Number | added v2.5 |
| SP | Study Permit | added v2.6 |
| SR | State registry ID | added v2.3.1 |
| SS | Social Security number | added v2.3 |
| TAX | Tax ID number | added v2.5 |
| TN | Treaty Number/ (Canada) | added v2.5 |
| TPR | Temporary Permanent Resident (Canada) | added v2.6 |
| U | Unspecified identifier | added v2.3.1 |
| UPIN | Medicare/CMS (formerly HCFA)'s Universal Physician Identification numbers | added v2.3.1 |
| USID | Unique Specimen ID | added v2.7 |
| VN | Visit number | added v2.3 |
| VP | Visitor Permit | added v2.6 |
| VS | VISA | added v2.3 |
| WC | WIC identifier | added v2.3.1 |
| WCN | Workers' Comp Number | added v2.4 |
| WP | Work Permit | added v2.6 |
| XX | Organization identifier | added v2.3 |