External constriction of unspecified parts of thorax

• birth trauma (P10-P15)
• obstetric trauma (O70-O71)

code to identify any retained foreign body, if applicable (Z18.-)

• Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
• The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

• injuries of breast
• injuries of chest (wall)
• injuries of interscapular area

• burns and corrosions (T20-T32)
• effects of foreign body in bronchus (T17.5)
• effects of foreign body in esophagus (T18.1)
• effects of foreign body in lung (T17.8)
• effects of foreign body in trachea (T17.4)
• frostbite (T33-T34)
• injuries of axilla
• injuries of clavicle
• injuries of scapular region
• injuries of shoulder
• insect bite or sting, venomous (T63.4)

The appropriate 7th character is to be added to each code from category S20

contusion of thorax NOS (S20.20)