ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.8 > S56.80 > S56.802 S56.802 Unspecified injury of other muscles, fascia and tendons at forearm level, left arm Non-Billable/Non-Specific Codes S56.802A..., initial encounterS56.802D..., subsequent encounterS56.802S..., sequela