ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.1 > S56.12 > S56.122 S56.122 Laceration of flexor muscle, fascia and tendon of left index finger at forearm level Non-Billable/Non-Specific Codes S56.122A..., initial encounterS56.122D..., subsequent encounterS56.122S..., sequela