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| Code | Specialty | Code | Specialty |
| ADA | Addiction Medicine-AN | AM | Preventive Med-Aerospace Med |
| ADF | Addiction Medicine-FP | AN | Anesthesiology |
| ADI | Addiction Medicine-IM | ANG | Angiography & Interventional Radiology |
| ADL | Adolescent Medicine | AP | Anatomic Pathology |
| ADP | Addiction Medicine-NP | APL | Anatomic Pathology & Lab Med |
| AFP | Adolescent & Young Adult Medicine - FP | APM | Anesthesiology-Pain Management |
| AI | Allergy and Immunology | APS | Addiction Psychiatry |
| ALI | Allergy-Diag Lab Immunology | ASM | Aerospace Medicine |
| BBT | Blood Banking-Transfusion Med | | |
| C | Cardiology | CIR | Cardiovasular-Interventional Radiology |
| CCA | Critical Care-Anesthesiology | CLP | Clinical Pathology |
| CCG | Clinical Cytogenetics | CN | Clinical Neurophysiology |
| CCM | Critical Care-Medicine | CP | Chemical Pathology |
| CCS | Critical Care-Surgery | CRS | Colon & Rectal Surgery |
| CG | Clinical Genetics | CVD | Cardiovascular Diseases |
| CHN | Child Neurology | CVS | Cardiovascular Surgery |
| CHP | Child Psychiatry | CY | Cytopathology |
| D | Dermatology | DPT | Dermatopathology |
| DMS | MOHS Micrographic Surgery | DR | Diagnostic Radiology |
| DPD | Dermatopathology-Derm | | |
| EM | Emergency Medicine | END | Endocrinology |
| EMS | Emergency Medical Services | ESM | Sports Medicine-Emergency Med |
| FOM | Family Practice/OMT | FPO | Family Practice/OMM |
| FOP | Forensic Pathology | FPS | Forensic Psychiatry |
| FP | Family Practice | FSM | Sports Medicine-Family Prac |
| GE | Gastroenterology | GO | Gynecological Oncology |
| GFP | Geriatric Medicine-FP | GP | General Practice |
| GGP | Geriatrics-General Practice | GVS | General Vascular Surgery |
| GIM | Geriatrics-Internal Medicine | | |
| HBM | Hyperbaric Medicine | HS | Hand Surgery |
| HEM | Hematology | HSO | Hand Surgery-Orthopedic Surg |
| HEO | Hematology & Oncology | HSP | Hand Surgery-Plastic Surg |
| HEP | Hematology-Pathology | HSS | Hand Surgery-Surgery |
| HNS | Head & Neck Surgery | | |
| IAR | Internal Medicine/Physical Medicine & Rehabilitation | IMG | Medical Genetics |
| IC | Interventional Cardiology | IMPM | Internal Medicine-Preventive Medicine |
| ICE | Cardiac Electrophysiology | IP | Internal Medicine-Psychiatry |
| ID | Infectious Diseases | IPD | Internal Med-Pediatrics |
| IEM | Internal Med-Emergency Med | IPT | Immunopathology |
| ILI | Diag Lab Immunology-Int Med | IR | Interventional Radiology |
| IM | Internal Medicine | ISM | Sports Medicine-Internal Med |
| LBM | Laboratory Medicine | | |
| MFM | Maternal & Fetal Medicine | MI | Medical Informatics |
| MMB | Medical Microbiology | MGP | Molecular Genetic Pathology |
| MTX | Medical Toxicology | | |
| N | Neurology | NP | Neurology & Psychiatry |
| NC | Nuclear Cardiology | NPT | Neuropathology |
| NE | Neonatology | NR | Nuclear Radiology |
| NEP | Nephrology | NRA | Neuroradiology |
| NM | Nuclear Medicine | NS | Neurological Surgery |
| NMS | Neuromusculoskeletal Med/OMT | NV | In Vivo & In Vitro Nuclear Med |
| OBG | Obstetrics & Gynecology | OOP | Otolaryngology/Facial Plastic Surg |
| OCC | Critical Care-Obs & Gynecology | OPH | Ophthalmology |
| OCM | Occupational Medicine | OPL | Facial Plastic Surgery |
| OE | Prev Med/Occupation-Environmental Medicine | ORS | Orthopedic Surgery |
| OGS | Obstetrics & Gynecologic Surg | ORT | Orthopedic Trauma |
| OM | Preventive Med-Occupation Med | OS | Other Specialty |
| OMM | Spec Prof in Osteo Manip Med | OSS | Orthopedic Surgery-Spine |
| OMS | Sports Medicine-OMM | OTA | Otolaryngic Allergy |
| OMT | Osteo Manipulative Medicine | OTL | Otolaryngology |
| ON | Oncology | OTR | Otorhinolaryngology |
| P | Psychiatry | PIC | Pediatric Intensive Care |
| PAI | Pediatric Allergy & Immunology | PID | Pediatric Infectious Diseases |
| PAN | Pediatric Anesthesiology | PLI | Pediatric Diag Lab Immunology |
| PD | Pediatrics | PLR | Plastic & Reconstructive Surg |
| PDC | Pediatric Cardiology | PM | Pain Management |
| PMed | Palliative Medicine | PDE | Pediatric Endocrinology |
| PMR | Pain Management-Rehab Medicine | PDN | Pediatric Neurology |
| PMS | Sports Medicine-Prev Med | PDO | Pediatric Otolaryngology |
| PNP | Pediatric Nephrology | PDP | Pediatric Psychiatry |
| PP | Pediatric Pathology | PDR | Pediatric Physical Medicine & Rehabilitation |
| PPR | Pediatric Rheumatology | PDS | Pediatric Surgery |
| PR | Proctology | PDX | Pediatric Pulmonology |
| PRD | Pediatric Radiology | PEM | Pediatric Emergency Medicine |
| PSM | Sports Medicine-Peds | PG | Pediatric Gastroenterology |
| PTH | Pathology | PH | Public Health |
| PUD | Pulmonary Diseases | PHM | Physical Medicine & Rehab |
| PUL | Pulmonary Medicine | PHO | Pediatric Hematology-Oncology |
| PYG | Geriatric Psychiatry | PHP | Preventive Med-Public Health |
| R | Radiology | RO | Radiation Oncology |
| RDR | Radiology (Recertified in Diagnostic Radiology) | RP | Radiological Physics |
| RE | Reproductive Endocrinology | RRO | Radiology (Recertified in Radiation Oncology) |
| RHU | Rheumatology | RT | Roentgenology |
| RI | Body Imaging | RTD | Diagnostic Roentgenology |
| RM | Rehabilitation Medicine | RTDR | Diag Roentgenology(Recert in Diagnostic Radiology) |
| RMS | Sports Medicine-Rehab Med | RTR | Roentgenology (Recert in Diagnostic Radiology) |
| S | Surgery-General | SM | Sports Medicine |
| TCV | Thoracic Cardiovascular Surg | TS | Thoracic Surgery |
| TR | Radiation Therapy | | |
| U | Urology | URS | Urological Surgery |
| UM | Undersea Medicine | | |
| VIR | Vascular/Interventional Radiology | VR | Vascular Radiology |
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