CAISS 2027 MAIN QUESTIONS AND ANSWERS
SET A+
✔✔(T/F) If burns are only described in combined degrees you should code to the most
severe. - ✔✔T
✔✔(T/F) Varying degrees of burns should be coded to the most severe. - ✔✔F
✔✔(T/F) When burns occur in varying degrees, assign first degree burns separately
from second and third degree burns. - ✔✔T
✔✔(T/F) If second degree burns are less than 10% TBSA and/or third degree burns are
less than ore equal to 100 cm2 or > 100 cm2 but < 10%, both second and third degree
burns should be coded separately. - ✔✔T
✔✔(T/F) If combined second and third degree burns cover greater or equal to 10%
TBSA, assign the AIS code based on their combined TBSA. - ✔✔T
✔✔(T/F) If a burn amputation is the direct result of the event, code as an amputation
using the specific body region and do not code the burn separately. - ✔✔T
✔✔(T/F) If an electrical burn includes "flash" burns code both the electrical and flash
burn separately. - ✔✔F
✔✔(T/F) Caustic agent ingestion injuries are assigned to the region of the specific organ
that is injured. - ✔✔T
✔✔(T/F) Caustic agent inhalation injures are assigned to the Chest ISS body region. -
✔✔T
,✔✔(T/F) When coding hypothermia you should code the whole number of the
temperature and not round up or down. - ✔✔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. - ✔✔T
✔✔Facial Bones - ✔✔Hyoid, Palatine, Zygoma, Mandible, Maxilla, and Nasal
✔✔Facial Vessels - ✔✔External Carotid and it's branches (facial and internal maxillary)
✔✔Facial Nerves - ✔✔Optic (intraorbital portion)
✔✔Supraorbital Ridge and Above - ✔✔Fractures of the upper third of face
✔✔Nasal Bones & Septum, Maxillary Sinuses, Orbital Bones, Zygoma, Zygomatic Arch,
Maxilla, Alveloar Process & Maxillary Dentition - ✔✔Fractures of middle third of face
✔✔Mandibular Dentition, Alveolar Process, Symphysis/Parasymphysis, Corpus or
Body, Angle, Ramus, Condyle & Coronoid Process - ✔✔Fractures of lower third of face
✔✔LeFort I Fracture - ✔✔(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 - ✔✔(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 - ✔✔(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. - ✔✔T
✔✔Eye Avulsion - ✔✔Traumatic enucleation of the eye
, ✔✔(T/F) Alveolar ridge fracture, including injury to teeth, is coded as a single injury. -
✔✔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. - ✔✔T
✔✔(T/F) Nose fractures that accompany a LeFort I fracture should not be coded as a
separate injury. - ✔✔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. - ✔✔T
✔✔(T/F) Facial fractures must be significantly displaced to be coded as "displaced". -
✔✔T
✔✔(T/F) Minimal displacement facial fractures should be coded as displaced fracture. -
✔✔F
✔✔Panfacial Fracture - ✔✔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. - ✔✔F
✔✔(T/F) The trachea and esophagus below the sternal notch are considered part of the
AIS Chest region. - ✔✔T
✔✔Open Chest Wound - ✔✔Also defined as a "sucking" chest wound.
✔✔Parietal Pleura - ✔✔A slick membrane that lines the chest cavity.
✔✔Viceral Pleura - ✔✔The portion of parietal pleura that envelops the viscera.
✔✔Intrapleural Space - ✔✔The space between the parietal and visceral pleura.
✔✔Pneumothorax - ✔✔When the intrapleural spaces fills partly or completely with air.
✔✔Hemothorax - ✔✔When the intrapleural spaces fills partly or completely with blood.
✔✔Hemopneumothorax - ✔✔When the intrapleural spaces fills partly or completely with
air and blood.
SET A+
✔✔(T/F) If burns are only described in combined degrees you should code to the most
severe. - ✔✔T
✔✔(T/F) Varying degrees of burns should be coded to the most severe. - ✔✔F
✔✔(T/F) When burns occur in varying degrees, assign first degree burns separately
from second and third degree burns. - ✔✔T
✔✔(T/F) If second degree burns are less than 10% TBSA and/or third degree burns are
less than ore equal to 100 cm2 or > 100 cm2 but < 10%, both second and third degree
burns should be coded separately. - ✔✔T
✔✔(T/F) If combined second and third degree burns cover greater or equal to 10%
TBSA, assign the AIS code based on their combined TBSA. - ✔✔T
✔✔(T/F) If a burn amputation is the direct result of the event, code as an amputation
using the specific body region and do not code the burn separately. - ✔✔T
✔✔(T/F) If an electrical burn includes "flash" burns code both the electrical and flash
burn separately. - ✔✔F
✔✔(T/F) Caustic agent ingestion injuries are assigned to the region of the specific organ
that is injured. - ✔✔T
✔✔(T/F) Caustic agent inhalation injures are assigned to the Chest ISS body region. -
✔✔T
,✔✔(T/F) When coding hypothermia you should code the whole number of the
temperature and not round up or down. - ✔✔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. - ✔✔T
✔✔Facial Bones - ✔✔Hyoid, Palatine, Zygoma, Mandible, Maxilla, and Nasal
✔✔Facial Vessels - ✔✔External Carotid and it's branches (facial and internal maxillary)
✔✔Facial Nerves - ✔✔Optic (intraorbital portion)
✔✔Supraorbital Ridge and Above - ✔✔Fractures of the upper third of face
✔✔Nasal Bones & Septum, Maxillary Sinuses, Orbital Bones, Zygoma, Zygomatic Arch,
Maxilla, Alveloar Process & Maxillary Dentition - ✔✔Fractures of middle third of face
✔✔Mandibular Dentition, Alveolar Process, Symphysis/Parasymphysis, Corpus or
Body, Angle, Ramus, Condyle & Coronoid Process - ✔✔Fractures of lower third of face
✔✔LeFort I Fracture - ✔✔(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 - ✔✔(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 - ✔✔(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. - ✔✔T
✔✔Eye Avulsion - ✔✔Traumatic enucleation of the eye
, ✔✔(T/F) Alveolar ridge fracture, including injury to teeth, is coded as a single injury. -
✔✔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. - ✔✔T
✔✔(T/F) Nose fractures that accompany a LeFort I fracture should not be coded as a
separate injury. - ✔✔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. - ✔✔T
✔✔(T/F) Facial fractures must be significantly displaced to be coded as "displaced". -
✔✔T
✔✔(T/F) Minimal displacement facial fractures should be coded as displaced fracture. -
✔✔F
✔✔Panfacial Fracture - ✔✔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. - ✔✔F
✔✔(T/F) The trachea and esophagus below the sternal notch are considered part of the
AIS Chest region. - ✔✔T
✔✔Open Chest Wound - ✔✔Also defined as a "sucking" chest wound.
✔✔Parietal Pleura - ✔✔A slick membrane that lines the chest cavity.
✔✔Viceral Pleura - ✔✔The portion of parietal pleura that envelops the viscera.
✔✔Intrapleural Space - ✔✔The space between the parietal and visceral pleura.
✔✔Pneumothorax - ✔✔When the intrapleural spaces fills partly or completely with air.
✔✔Hemothorax - ✔✔When the intrapleural spaces fills partly or completely with blood.
✔✔Hemopneumothorax - ✔✔When the intrapleural spaces fills partly or completely with
air and blood.
