ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.1 > S56.11 > S56.111 S56.111 Strain of flexor muscle, fascia and tendon of right index finger at forearm level Non-Billable/Non-Specific Codes S56.111A..., initial encounterS56.111D..., subsequent encounterS56.111S..., sequela