ICD-10-CM > S00-T88 > T80-T88 > T85 > T85.8 > T85.85 > T85.858 T85.858 Stenosis due to other internal prosthetic devices, implants and grafts Non-Billable/Non-Specific Codes T85.858A..., initial encounterT85.858D..., subsequent encounterT85.858S..., sequela