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