ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.4 > S56.49 > S56.499 S56.499 Other injury of extensor muscle, fascia and tendon of unspecified finger at forearm level Non-Billable/Non-Specific Codes S56.499A..., initial encounterS56.499D..., subsequent encounterS56.499S..., sequela