ICD-10-CM > S00-T88 > S20-S29 > S29 > S29.0 > S29.09 S29.09 Other injury of muscle and tendon of thorax Non-Billable/Non-Specific Codes S29.091Other injury of muscle and tendon of front wall of thoraxS29.091A..., initial encounterS29.091D..., subsequent encounterS29.091S..., sequelaS29.092Other injury of muscle and tendon of back wall of thoraxS29.092A..., initial encounterS29.092D..., subsequent encounterS29.092S..., sequelaS29.099Other injury of muscle and tendon of unspecified wall of thoraxS29.099A..., initial encounterS29.099D..., subsequent encounterS29.099S..., sequela