ICD-10-CM > S00-T88 > S40-S49 > S46 > S46.3 > S46.31 S46.31 Strain of muscle, fascia and tendon of triceps Non-Billable/Non-Specific Codes S46.311Strain of muscle, fascia and tendon of triceps, right armS46.311A..., initial encounterS46.311D..., subsequent encounterS46.311S..., sequelaS46.312Strain of muscle, fascia and tendon of triceps, left armS46.312A..., initial encounterS46.312D..., subsequent encounterS46.312S..., sequelaS46.319Strain of muscle, fascia and tendon of triceps, unspecified armS46.319A..., initial encounterS46.319D..., subsequent encounterS46.319S..., sequela