ICD-10-CM > S00-T88 > T51-T65 > T54 > T54.3 T54.3 Toxic effects of corrosive alkalis and alkali-like substances Non-Billable/Non-Specific Applicable To Toxic effects of potassium hydroxideToxic effects of sodium hydroxide Codes T54.3XToxic effects of corrosive alkalis and alkali-like substancesT54.3X1Toxic effect of corrosive alkalis and alkali-like substances, accidental (unintentional)T54.3X1A..., initial encounterT54.3X1D..., subsequent encounterT54.3X1S..., sequelaT54.3X2Toxic effect of corrosive alkalis and alkali-like substances, intentional self-harmT54.3X2A..., initial encounterT54.3X2D..., subsequent encounterT54.3X2S..., sequelaT54.3X3Toxic effect of corrosive alkalis and alkali-like substances, assaultT54.3X3A..., initial encounterT54.3X3D..., subsequent encounterT54.3X3S..., sequelaT54.3X4Toxic effect of corrosive alkalis and alkali-like substances, undeterminedT54.3X4A..., initial encounterT54.3X4D..., subsequent encounterT54.3X4S..., sequela