ICD-10-CM > S00-T88 > T36-T50 > T40 > T40.4 T40.4 Poisoning by, adverse effect of and underdosing of other synthetic narcotics Non-Billable/Non-Specific Codes T40.41Poisoning by, adverse effect of and underdosing of fentanyl or fentanyl analogsT40.411Poisoning by fentanyl or fentanyl analogs, accidental (unintentional)T40.411A..., initial encounterT40.411D..., subsequent encounterT40.411S..., sequelaT40.412Poisoning by fentanyl or fentanyl analogs, intentional self-harmT40.412A..., initial encounterT40.412D..., subsequent encounterT40.412S..., sequelaT40.413Poisoning by fentanyl or fentanyl analogs, assaultT40.413A..., initial encounterT40.413D..., subsequent encounterT40.413S..., sequelaT40.414Poisoning by fentanyl or fentanyl analogs, undeterminedT40.414A..., initial encounterT40.414D..., subsequent encounterT40.414S..., sequelaT40.415Adverse effect of fentanyl or fentanyl analogsT40.415A..., initial encounterT40.415D..., subsequent encounterT40.415S..., sequelaT40.416Underdosing of fentanyl or fentanyl analogsT40.416A..., initial encounterT40.416D..., subsequent encounterT40.416S..., sequelaT40.42Poisoning by, adverse effect of and underdosing of tramadolT40.421Poisoning by tramadol, accidental (unintentional)T40.421A..., initial encounterT40.421D..., subsequent encounterT40.421S..., sequelaT40.422Poisoning by tramadol, intentional self-harmT40.422A..., initial encounterT40.422D..., subsequent encounterT40.422S..., sequelaT40.423Poisoning by tramadol, assaultT40.423A..., initial encounterT40.423D..., subsequent encounterT40.423S..., sequelaT40.424Poisoning by tramadol, undeterminedT40.424A..., initial encounterT40.424D..., subsequent encounterT40.424S..., sequelaT40.425Adverse effect of tramadolT40.425A..., initial encounterT40.425D..., subsequent encounterT40.425S..., sequelaT40.426Underdosing of tramadolT40.426A..., initial encounterT40.426D..., subsequent encounterT40.426S..., sequelaT40.49Poisoning by, adverse effect of and underdosing of other synthetic narcoticsT40.491Poisoning by other synthetic narcotics, accidental (unintentional)T40.491A..., initial encounterT40.491D..., subsequent encounterT40.491S..., sequelaT40.492Poisoning by other synthetic narcotics, intentional self-harmT40.492A..., initial encounterT40.492D..., subsequent encounterT40.492S..., sequelaT40.493Poisoning by other synthetic narcotics, assaultT40.493A..., initial encounterT40.493D..., subsequent encounterT40.493S..., sequelaT40.494Poisoning by other synthetic narcotics, undeterminedT40.494A..., initial encounterT40.494D..., subsequent encounterT40.494S..., sequelaT40.495Adverse effect of other synthetic narcoticsT40.495A..., initial encounterT40.495D..., subsequent encounterT40.495S..., sequelaT40.496Underdosing of other synthetic narcoticsT40.496A..., initial encounterT40.496D..., subsequent encounterT40.496S..., sequela