T46.1X1 - Poisoning by calcium-channel blockers, accidental (unintentional) T46.1 - Poisoning by, adverse effect of and underdosing of calcium-channel blockers T46.1X - Poisoning by, adverse effect of and underdosing of calcium-channel blockers T46.1X1 - Poisoning by calcium-channel blockers, accidental (unintentional)