ICD-10-CM > S00-T88 > S40-S49 > S46 > S46.3 > S46.30 > S46.309 S46.309 Unspecified injury of muscle, fascia and tendon of triceps, unspecified arm Non-Billable/Non-Specific Codes S46.309A..., initial encounterS46.309D..., subsequent encounterS46.309S..., sequela