ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.9 > S56.92 > S56.921 S56.921 Laceration of unspecified muscles, fascia and tendons at forearm level, right arm Non-Billable/Non-Specific Codes S56.921A..., initial encounterS56.921D..., subsequent encounterS56.921S..., sequela