ICD-10-CM > S00-T88 > S40-S49 > S46 > S46.3 > S46.39 > S46.391 S46.391 Other injury of muscle, fascia and tendon of triceps, right arm Non-Billable/Non-Specific Codes S46.391A..., initial encounterS46.391D..., subsequent encounterS46.391S..., sequela