ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.1 > S66.11 > S66.117 S66.117 Strain of flexor muscle, fascia and tendon of left little finger at wrist and hand level Non-Billable/Non-Specific Codes S66.117A..., initial encounterS66.117D..., subsequent encounterS66.117S..., sequela