| E1 | Upper left, eyelid |
| E2 | Lower left, eyelid |
| E3 | Upper right, eyelid |
| E4 | Lower right, eyelid |
| EA | Erythropoetic stimulating agent (esa) administered to treat anemia due to anti-cancer chemotherapy |
| EB | Erythropoetic stimulating agent (esa) administered to treat anemia due to anti-cancer radiotherapy |
| EC | Erythropoetic stimulating agent (esa) administered to treat anemia not due to anti-cancer radiotherapy or anti-cancer chemotherapy |
| ED | Hematocrit level has exceeded 39% (or hemoglobin level has exceeded 13.0 g/dl) for 3 or more consecutive billing cycles immediately prior to and including the current cycle |
| EE | Hematocrit level has not exceeded 39% (or hemoglobin level has not exceeded 13.0 g/dl) for 3 or more consecutive billing cycles immediately prior to and including the current cycle |
| EJ | Subsequent claims for a defined course of therapy, e.g., epo, sodium hyaluronate, infliximab |
| EM | Emergency reserve supply (for esrd benefit only) |
| EP | Service provided as part of medicaid early periodic screening diagnosis and treatment (epsdt) program |
| ER | Items and services furnished by a provider-based, off-campus emergency department |
| ET | Emergency services |
| EX | Expatriate beneficiary |
| EY | No physician or other licensed health care provider order for this item or service |