ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.8 > S56.80 > S56.801 S56.801 Unspecified injury of other muscles, fascia and tendons at forearm level, right arm Non-Billable/Non-Specific Codes S56.801A..., initial encounterS56.801D..., subsequent encounterS56.801S..., sequela