ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.1 > S56.11 > S56.117 S56.117 Strain of flexor muscle, fascia and tendon of right little finger at forearm level Non-Billable/Non-Specific Codes S56.117A..., initial encounterS56.117D..., subsequent encounterS56.117S..., sequela