ICD-10-CM > S00-T88 > T51-T65 > T59 > T59.6 > T59.6X > T59.6X2 T59.6X2 Toxic effect of hydrogen sulfide, intentional self-harm Non-Billable/Non-Specific Codes T59.6X2A..., initial encounterT59.6X2D..., subsequent encounterT59.6X2S..., sequela