ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.1 > S56.12 > S56.124 S56.124 Laceration of flexor muscle, fascia and tendon of left middle finger at forearm level Non-Billable/Non-Specific Codes S56.124A..., initial encounterS56.124D..., subsequent encounterS56.124S..., sequela