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