ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.2 > S56.20 > S56.201 S56.201 Unspecified injury of other flexor muscle, fascia and tendon at forearm level, right arm Non-Billable/Non-Specific Codes S56.201A..., initial encounterS56.201D..., subsequent encounterS56.201S..., sequela