CAISS - Thorax Chapter Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
What code to use if only vague Injuries to the Thorax NFS
description is available?
Types of Whole Area injuries in Breast avulsion
Thorax Region Cush injury/massive destruction
Avulsive injury
Open (sucking) chest wound
Pectoral muscle tear/laceration
Penetrating injury
Skin/subcutanrous/muscle
What must a crush injury involve? bilateral destruction of skeletal, vascular,
organ
and tissue systems
What must an avulsive injury massive loss of thoracic wall and thoarcic
involve? cavity
contents
What code to use if penetrating Penetrating injury NFS
injury does not involve internal
structures?
What code to use for blunt soft Skin/subcutaneous/muscle NFS
tissue injury to the thorax
, How to code a "degloving" injury Code as an avulsion
Vessels included in Thorax Region Aorta, thoracic
Brachiocephalic (innominate) artery/vein
Coronary artery
Pulmonary artery/vein
Subclavian artery/vein
Vena Cava
Other named arteries
Other named veins
How to code vessel injuries coded separately from other injuries to the
thorax
except- crush/avulsive injury which include
all
injuries to thorax
What are the grades of the OIS IV or V
"Aorta,thoracic"
What does an intimal tear include? Dissection
Another name for Brachiocephalic Innominate
What are the grades of the OIS III
"Brachiocephalic artery"
What are the grades of the OIS IV, V
"Pulmonary artery and vein"
Answers with Verified Solutions | Latest
Updated 2026
What code to use if only vague Injuries to the Thorax NFS
description is available?
Types of Whole Area injuries in Breast avulsion
Thorax Region Cush injury/massive destruction
Avulsive injury
Open (sucking) chest wound
Pectoral muscle tear/laceration
Penetrating injury
Skin/subcutanrous/muscle
What must a crush injury involve? bilateral destruction of skeletal, vascular,
organ
and tissue systems
What must an avulsive injury massive loss of thoracic wall and thoarcic
involve? cavity
contents
What code to use if penetrating Penetrating injury NFS
injury does not involve internal
structures?
What code to use for blunt soft Skin/subcutaneous/muscle NFS
tissue injury to the thorax
, How to code a "degloving" injury Code as an avulsion
Vessels included in Thorax Region Aorta, thoracic
Brachiocephalic (innominate) artery/vein
Coronary artery
Pulmonary artery/vein
Subclavian artery/vein
Vena Cava
Other named arteries
Other named veins
How to code vessel injuries coded separately from other injuries to the
thorax
except- crush/avulsive injury which include
all
injuries to thorax
What are the grades of the OIS IV or V
"Aorta,thoracic"
What does an intimal tear include? Dissection
Another name for Brachiocephalic Innominate
What are the grades of the OIS III
"Brachiocephalic artery"
What are the grades of the OIS IV, V
"Pulmonary artery and vein"
