ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.2 > S66.22 > S66.222 S66.222 Laceration of extensor muscle, fascia and tendon of left thumb at wrist and hand level Non-Billable/Non-Specific Codes S66.222A..., initial encounterS66.222D..., subsequent encounterS66.222S..., sequela