ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.4 > S56.42 > S56.424 S56.424 Laceration of extensor muscle, fascia and tendon of left middle finger at forearm level Non-Billable/Non-Specific Codes S56.424A..., initial encounterS56.424D..., subsequent encounterS56.424S..., sequela