ICD-10-CM > S00-T88 > T80-T88 > T82 > T82.3 > T82.31 > T82.311 T82.311 Breakdown (mechanical) of carotid arterial graft (bypass) Non-Billable/Non-Specific Codes T82.311A..., initial encounterT82.311D..., subsequent encounterT82.311S..., sequela