ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.1 > S66.11 > S66.112 S66.112 Strain of flexor muscle, fascia and tendon of right middle finger at wrist and hand level Non-Billable/Non-Specific Codes S66.112A..., initial encounterS66.112D..., subsequent encounterS66.112S..., sequela