ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.9 > S56.91 > S56.911 S56.911 Strain of unspecified muscles, fascia and tendons at forearm level, right arm Non-Billable/Non-Specific Codes S56.911A..., initial encounterS56.911D..., subsequent encounterS56.911S..., sequela