ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.5 > S66.52 > S66.523 S66.523 Laceration of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level Non-Billable/Non-Specific Codes S66.523A..., initial encounterS66.523D..., subsequent encounterS66.523S..., sequela