ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.1 > S56.11 > S56.119 S56.119 Strain of flexor muscle, fascia and tendon of finger of unspecified finger at forearm level Non-Billable/Non-Specific Codes S56.119A..., initial encounterS56.119D..., subsequent encounterS56.119S..., sequela