ICD-10-CM > S00-T88 > S20-S29 > S29 > S29.0 > S29.02 > S29.021 S29.021 Laceration of muscle and tendon of front wall of thorax Non-Billable/Non-Specific Codes S29.021A..., initial encounterS29.021D..., subsequent encounterS29.021S..., sequela