ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.1 > S56.11 > S56.118 S56.118 Strain of flexor muscle, fascia and tendon of left little finger at forearm level Non-Billable/Non-Specific Codes S56.118A..., initial encounterS56.118D..., subsequent encounterS56.118S..., sequela