Since 1994, American Medical ID has offered high-quality, life-saving medical ID jewelry. Through our years of expertise, we’ve assembled this list of the 100 most common medical abbreviations on medical IDs. Please note that the list is not in a particular order. If you need help with engraving, read our engraving guide or call our customer service line at 800-363-5985. Number Abbreviation Non-Abbreviated 1 ALGY Allergy 2 T2D Type 2 Diabetes 3 T1D Type 1 Diabetes 4 PCN Penicillin …