ICD-10-CM > S00-T88 > T36-T50 > T48 > T48.1 > T48.1X T48.1X Poisoning by, adverse effect of and underdosing of skeletal muscle relaxants [neuromuscular blocking agents] Non-Billable/Non-Specific Codes T48.1X1Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional)T48.1X1A..., initial encounterT48.1X1D..., subsequent encounterT48.1X1S..., sequelaT48.1X2Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harmT48.1X2A..., initial encounterT48.1X2D..., subsequent encounterT48.1X2S..., sequelaT48.1X3Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], assaultT48.1X3A..., initial encounterT48.1X3D..., subsequent encounterT48.1X3S..., sequelaT48.1X4Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], undeterminedT48.1X4A..., initial encounterT48.1X4D..., subsequent encounterT48.1X4S..., sequelaT48.1X5Adverse effect of skeletal muscle relaxants [neuromuscular blocking agents]T48.1X5A..., initial encounterT48.1X5D..., subsequent encounterT48.1X5S..., sequelaT48.1X6Underdosing of skeletal muscle relaxants [neuromuscular blocking agents]T48.1X6A..., initial encounterT48.1X6D..., subsequent encounterT48.1X6S..., sequela