ICD-10-CM > S00-T88 > T80-T88 > T85 > T85.8 > T85.84 > T85.840 T85.840 Pain due to nervous system prosthetic devices, implants and grafts Non-Billable/Non-Specific Codes T85.840A..., initial encounterT85.840D..., subsequent encounterT85.840S..., sequela