CAISS EXAM 2025| ACTUAL EXAM QUESTIONS AND
ACCURATE ANSWERS|EXPERT VERIFIED FOR
GUARANTEED PASS|LATEST VERSION
(T/F) Caustic agent inhalation injures are assigned to the Chest ISS body region. - CORRECT
ANSWER - T
(T/F) When coding hypothermia you should code the whole number of the temperature and not
round up or down. - CORRECT ANSWER - T
(T/F) Whole body injury with massive chest and abdominal injuries, including the loss of one or
more limbs or decapitation is an AIS .6 injury. - CORRECT ANSWER - T
Facial Bones - CORRECT ANSWER - Hyoid, Palatine, Zygoma, Mandible, Maxilla, and Nasal
Facial Vessels - CORRECT ANSWER - External Carotid and it's branches (facial and
internal2025 maxillary)
Facial Nerves - CORRECT ANSWER - Optic (intraorbital portion)
Supraorbital Ridge and Above - CORRECT ANSWER - Fractures of the upper third of face
Nasal Bones & Septum, Maxillary Sinuses, Orbital Bones, Zygoma, Zygomatic Arch, Maxilla,
Alveloar Process & Maxillary Dentition - CORRECT ANSWER - Fractures of middle third of
face
Mandibular Dentition, Alveolar Process, Symphysis/Parasymphysis, Corpus or Body, Angle,
Ramus, Condyle & Coronoid Process - CORRECT ANSWER - Fractures of lower third of face
,LeFort I Fracture - CORRECT ANSWER - (Tranverse, horizontal maxillary alveolar fractures,
Palate-facial disjunction (Guerin fracture)), occurs through the lower maxilla into the nasal
cavity including the maxiallary alveolar process, portion of the maxillary sinus, the hard palate
and the lower aspect of the pterygoid plates. Fracture detaches the tooth-bearing portion from the
rest of the maxilla with one fracture line.
LeFort II Fracture - CORRECT ANSWER - (Pyramidal Disjunction) Fracture line passes
through the nasal bone, lacrimal bone, floor of orbit, infraorbital margin, across the upper portion
of the zygomatic-maxillary suture line and maxillary sinus and pterygoid plate along the lateral
wall fo teh maxilla into the ptergopalatine fossa. Two fracture lines result in a floating maxilla
and nose with a possible cribiform plate fracture.
LeFort III Fracture - CORRECT ANSWER - (Craniofacial disjunction), Complete separation of
the facial bones (three fracture lines) from their cranial attachments creating the most complex of
all facial fractures. Fracture passes through the nasofrontal suture, the junction of the ethmoid
and frontal bone, the superior orbital fissure, lateral wall of the orbit, zygomaticofrontal and
temporal suture, with a high fracture of the ptergoid plate producing a dish face deformity that is
difficult to correct secondarily.
(T/F) Bilateral injuries should be coded separately except where specifically noted in the
dictionary. - CORRECT ANSWER - T
Eye Avulsion - CORRECT ANSWER - Traumatic enucleation of the eye
(T/F) Alveolar ridge fracture, including injury to teeth, is coded as a single injury. - CORRECT
ANSWER - T
(T/F) Bilateral fractures to the maxilla or mandible are coded as single injuries with location
assigned to the fracture located in the largest mass area of the bone. - CORRECT ANSWER - T
(T/F) Nose fractures that accompany a LeFort I fracture should not be coded as a separate injury.
- CORRECT ANSWER - F
,(T/F) Nose fractures that accompany Lefort II and II fractures are, by definition, included in the
LeFort fracture and therefore are not coded separately. - CORRECT ANSWER - T
(T/F) Facial fractures must be significantly displaced to be coded as "displaced". - CORRECT
ANSWER - T
(T/F) Minimal displacement facial fractures should be coded as displaced fracture. - CORRECT
ANSWER - F
Panfacial Fracture - CORRECT ANSWER - Multiple and complex fractures that may involve the
middle and lower face, upper and middle face or all these locations but are not LeFort fractures.
(T/F) You do not have to have a fracture line running through eh ptergoid plates to have a LeFort
fractures. - CORRECT ANSWER - F
(T/F) The trachea and esophagus below the sternal notch are considered part of the AIS Chest
region. - CORRECT ANSWER - T
Open Chest Wound - CORRECT ANSWER - Also defined as a "sucking" chest wound.
Parietal Pleura - CORRECT ANSWER - A slick membrane that lines the chest cavity.
Viceral Pleura - CORRECT ANSWER - The portion of parietal pleura that envelops the viscera.
Intrapleural Space - CORRECT ANSWER - The space between the parietal and visceral pleura.
Pneumothorax - CORRECT ANSWER - When the intrapleural spaces fills partly or completely
with air.
, Hemothorax - CORRECT ANSWER - When the intrapleural spaces fills partly or completely
with blood.
Hemopneumothorax - CORRECT ANSWER - When the intrapleural spaces fills partly or
completely with air and blood.
(T/F) If a flail chest is documented on one side and fractured ribs are documented on the other
side you should code two separate injuries. - CORRECT ANSWER - T
Flail Chest - CORRECT ANSWER - Three or more adjacent ribs each fractured in two or more
places.
(T/F) Costal cartilage fracture or tear should be coded as rib fracture. - CORRECT ANSWER - T
(T/F) Lung contusions do not have to be consistent with history of chest trauma and do not need
to be verified by imaging. - CORRECT ANSWER - F
(T/F) Clinical pulmonary dysfunction is insufficient evidence for coding lung contusions. -
CORRECT ANSWER - T
(T/F) When chest trauma is only described by its sequela and no specific injury information is
available, the section "Thoracic injury" should be used. - CORRECT ANSWER - T
(T/F) Hemopneumothorax and Hemopneumomediastinum are consequences of chest trauma. -
CORRECT ANSWER - T
(T/F) Hemopneumothorax and Hemopneumomediastinum should be coded as one injury. -
CORRECT ANSWER - F
ACCURATE ANSWERS|EXPERT VERIFIED FOR
GUARANTEED PASS|LATEST VERSION
(T/F) Caustic agent inhalation injures are assigned to the Chest ISS body region. - CORRECT
ANSWER - T
(T/F) When coding hypothermia you should code the whole number of the temperature and not
round up or down. - CORRECT ANSWER - T
(T/F) Whole body injury with massive chest and abdominal injuries, including the loss of one or
more limbs or decapitation is an AIS .6 injury. - CORRECT ANSWER - T
Facial Bones - CORRECT ANSWER - Hyoid, Palatine, Zygoma, Mandible, Maxilla, and Nasal
Facial Vessels - CORRECT ANSWER - External Carotid and it's branches (facial and
internal2025 maxillary)
Facial Nerves - CORRECT ANSWER - Optic (intraorbital portion)
Supraorbital Ridge and Above - CORRECT ANSWER - Fractures of the upper third of face
Nasal Bones & Septum, Maxillary Sinuses, Orbital Bones, Zygoma, Zygomatic Arch, Maxilla,
Alveloar Process & Maxillary Dentition - CORRECT ANSWER - Fractures of middle third of
face
Mandibular Dentition, Alveolar Process, Symphysis/Parasymphysis, Corpus or Body, Angle,
Ramus, Condyle & Coronoid Process - CORRECT ANSWER - Fractures of lower third of face
,LeFort I Fracture - CORRECT ANSWER - (Tranverse, horizontal maxillary alveolar fractures,
Palate-facial disjunction (Guerin fracture)), occurs through the lower maxilla into the nasal
cavity including the maxiallary alveolar process, portion of the maxillary sinus, the hard palate
and the lower aspect of the pterygoid plates. Fracture detaches the tooth-bearing portion from the
rest of the maxilla with one fracture line.
LeFort II Fracture - CORRECT ANSWER - (Pyramidal Disjunction) Fracture line passes
through the nasal bone, lacrimal bone, floor of orbit, infraorbital margin, across the upper portion
of the zygomatic-maxillary suture line and maxillary sinus and pterygoid plate along the lateral
wall fo teh maxilla into the ptergopalatine fossa. Two fracture lines result in a floating maxilla
and nose with a possible cribiform plate fracture.
LeFort III Fracture - CORRECT ANSWER - (Craniofacial disjunction), Complete separation of
the facial bones (three fracture lines) from their cranial attachments creating the most complex of
all facial fractures. Fracture passes through the nasofrontal suture, the junction of the ethmoid
and frontal bone, the superior orbital fissure, lateral wall of the orbit, zygomaticofrontal and
temporal suture, with a high fracture of the ptergoid plate producing a dish face deformity that is
difficult to correct secondarily.
(T/F) Bilateral injuries should be coded separately except where specifically noted in the
dictionary. - CORRECT ANSWER - T
Eye Avulsion - CORRECT ANSWER - Traumatic enucleation of the eye
(T/F) Alveolar ridge fracture, including injury to teeth, is coded as a single injury. - CORRECT
ANSWER - T
(T/F) Bilateral fractures to the maxilla or mandible are coded as single injuries with location
assigned to the fracture located in the largest mass area of the bone. - CORRECT ANSWER - T
(T/F) Nose fractures that accompany a LeFort I fracture should not be coded as a separate injury.
- CORRECT ANSWER - F
,(T/F) Nose fractures that accompany Lefort II and II fractures are, by definition, included in the
LeFort fracture and therefore are not coded separately. - CORRECT ANSWER - T
(T/F) Facial fractures must be significantly displaced to be coded as "displaced". - CORRECT
ANSWER - T
(T/F) Minimal displacement facial fractures should be coded as displaced fracture. - CORRECT
ANSWER - F
Panfacial Fracture - CORRECT ANSWER - Multiple and complex fractures that may involve the
middle and lower face, upper and middle face or all these locations but are not LeFort fractures.
(T/F) You do not have to have a fracture line running through eh ptergoid plates to have a LeFort
fractures. - CORRECT ANSWER - F
(T/F) The trachea and esophagus below the sternal notch are considered part of the AIS Chest
region. - CORRECT ANSWER - T
Open Chest Wound - CORRECT ANSWER - Also defined as a "sucking" chest wound.
Parietal Pleura - CORRECT ANSWER - A slick membrane that lines the chest cavity.
Viceral Pleura - CORRECT ANSWER - The portion of parietal pleura that envelops the viscera.
Intrapleural Space - CORRECT ANSWER - The space between the parietal and visceral pleura.
Pneumothorax - CORRECT ANSWER - When the intrapleural spaces fills partly or completely
with air.
, Hemothorax - CORRECT ANSWER - When the intrapleural spaces fills partly or completely
with blood.
Hemopneumothorax - CORRECT ANSWER - When the intrapleural spaces fills partly or
completely with air and blood.
(T/F) If a flail chest is documented on one side and fractured ribs are documented on the other
side you should code two separate injuries. - CORRECT ANSWER - T
Flail Chest - CORRECT ANSWER - Three or more adjacent ribs each fractured in two or more
places.
(T/F) Costal cartilage fracture or tear should be coded as rib fracture. - CORRECT ANSWER - T
(T/F) Lung contusions do not have to be consistent with history of chest trauma and do not need
to be verified by imaging. - CORRECT ANSWER - F
(T/F) Clinical pulmonary dysfunction is insufficient evidence for coding lung contusions. -
CORRECT ANSWER - T
(T/F) When chest trauma is only described by its sequela and no specific injury information is
available, the section "Thoracic injury" should be used. - CORRECT ANSWER - T
(T/F) Hemopneumothorax and Hemopneumomediastinum are consequences of chest trauma. -
CORRECT ANSWER - T
(T/F) Hemopneumothorax and Hemopneumomediastinum should be coded as one injury. -
CORRECT ANSWER - F
