ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.4 > S56.49 > S56.494 S56.494 Other injury of extensor muscle, fascia and tendon of left middle finger at forearm level Non-Billable/Non-Specific Codes S56.494A..., initial encounterS56.494D..., subsequent encounterS56.494S..., sequela