ICD-10-CM > S00-T88 > T51-T65 > T54 > T54.3 > T54.3X > T54.3X2 T54.3X2 Toxic effect of corrosive alkalis and alkali-like substances, intentional self-harm Non-Billable/Non-Specific Codes T54.3X2A..., initial encounterT54.3X2D..., subsequent encounterT54.3X2S..., sequela