What is the Dictionary of Medicines and Devices (dm+d)?

The dm+d is the NHS standard for medicines and devices terminology in clinical systems. GP prescribers select medications from dm+d, generating structured, coded prescriptions linked to the patient record. It provides a hierarchical model from Virtual Therapeutic Moiety down to Actual Medicinal Product Pack (AMPP), enabling consistent prescribing, dispensing, and clinical decision support across all NHS care settings.