CAISS EXAM (LEFORT I FRACTURE) QUESTIONS AND ANSWERS 2025
Boxed & Bold Text - (ANSWER)Represent AIS coding rules and conventions and contain directives to
assist in the appropriate use of specific descriptions.
Brackets - (ANSWER)Denote inclusive or exclusive information.
Parentheseses - (ANSWER)Include synonyms or occasionally, non-clinical terms and provide a definition
for the injury description.
Semicolons - (ANSWER)Separate injury descriptors that are comparable in severity.
Bold Type - (ANSWER)Identifies an anatomical structure
Italics - (ANSWER)Are used for proper-named anatomical structures or injuries, and for OIS grades.
AIS .1 - (ANSWER)Minor
AIS .2 - (ANSWER)Moderate
AIS .3 - (ANSWER)Serious
AIS .4 - (ANSWER)Severe
AIS .5 - (ANSWER)Critical
AIS .6 - (ANSWER)Maximum
Range of AIS severity codes - (ANSWER)1-6
,CAISS EXAM (LEFORT I FRACTURE) QUESTIONS AND ANSWERS 2025
Is "DEATH" part of the AIS severity scale? - (ANSWER)No
Does a linear relationship exist between AIS severity codes? - (ANSWER)No
(T/F) Injuries within the same code may not be strictly compatible. - (ANSWER)T
AIS .9 - (ANSWER)Unknown
(T/F) The AIS single digit severity number indicates the relative severity of injury in an "average person"
who sustains the coded injury as his only injury. - (ANSWER)T
Average Patient - (ANSWER)Adult 25-40 years of age
Free of pre-existing conditions
Free of treatment complications
Receiving timely, appropriate care for the injury
Pre-dot Code - (ANSWER)6 digits to the left of decimal point
AIS Severity Number - (ANSWER)A single digit to the right of the decimal point.
Body Region - (ANSWER)The first number in the pre-dot code stands for?
Type of Anatomic Structure - (ANSWER)The second number in the pre-dot code stands for?
Specific Anatomic Structure - (ANSWER)The third & fourth numbers in the pre-dot code stands for?
Level of injury within the specific body region and anatomic structure - (ANSWER)The fifth & sixth
numbers in the pre-dot code stands for?
,CAISS EXAM (LEFORT I FRACTURE) QUESTIONS AND ANSWERS 2025
(T/F) AIS assesses the severity of single injuries. - (ANSWER)T
(T/F) The ISS is the sum of the squares of the highest AIS in each of the (3) most severity injured ISS body
regions. - (ANSWER)T
There are how many ISS body regions? - (ANSWER)6
ISS Body Regions - (ANSWER)Head & Neck
Face
Chest
Abdominal & Pelvic Contents
Extremities & Pelvic Girdle
External
Head & Neck - (ANSWER)Include injury to the brain, skull, cervical spine or neck organs.
(T/F) Asphyxia is assigned to the ISS Head region? - (ANSWER)T
Face - (ANSWER)Include injury to mouth, ears, eyes, nose and facial bones.
Chest - (ANSWER)Include injury to abdominal and pelvic contents, including all lesions to internal organs
in the respective cavities and injuries to diaphragm, rib cage and thoracic spine.
(T/F) Drowning is assigned to the Chest region? - (ANSWER)T
(T/F) The ISS is the sum of the squares of the highest AIS in each of the (5) most severity injured ISS body
regions. - (ANSWER)F
, CAISS EXAM (LEFORT I FRACTURE) QUESTIONS AND ANSWERS 2025
(T/F) There are 9 ISS body regions? - (ANSWER)F
(T/F) Asphyxia is assigned to the ISS Chest region? - (ANSWER)F
(T/F) Drowning is assigned to the Head & Neck region? - (ANSWER)f
Abdomen and Pelvic Area - (ANSWER)Include injury to Lumber spine lesions.
External - (ANSWER)Injuries that include lacerations, contusions, abrasions, hypothermia, electrical
injury, whole body injury and burns are assigned to what region?
1-75 - (ANSWER)The ISS score ranges from what to what?
(T/F) An ISS of 75 can be derived in 2 ways: one AIS .5 injury in each of three body regions or a single AIS
.6 injury. - (ANSWER)T
Should patients with a AIS .9 code be included in research studies? - (ANSWER)No
Underestimation of the ISS score - (ANSWER)Assigning injuries to too few body regions can result in
what?
Overestimation of the ISS Score - (ANSWER)Assigning injuries to too many ISS body regions can result in
what?
Injury - (ANSWER)The anatomic lesion resulting from a transfer of energy rather than a complication or
immediate sequelae is what?
Blunt, Penetration, Burns & Selected other Trauma - (ANSWER)The AIS includes injuries from the what
mechanisms?
Boxed & Bold Text - (ANSWER)Represent AIS coding rules and conventions and contain directives to
assist in the appropriate use of specific descriptions.
Brackets - (ANSWER)Denote inclusive or exclusive information.
Parentheseses - (ANSWER)Include synonyms or occasionally, non-clinical terms and provide a definition
for the injury description.
Semicolons - (ANSWER)Separate injury descriptors that are comparable in severity.
Bold Type - (ANSWER)Identifies an anatomical structure
Italics - (ANSWER)Are used for proper-named anatomical structures or injuries, and for OIS grades.
AIS .1 - (ANSWER)Minor
AIS .2 - (ANSWER)Moderate
AIS .3 - (ANSWER)Serious
AIS .4 - (ANSWER)Severe
AIS .5 - (ANSWER)Critical
AIS .6 - (ANSWER)Maximum
Range of AIS severity codes - (ANSWER)1-6
,CAISS EXAM (LEFORT I FRACTURE) QUESTIONS AND ANSWERS 2025
Is "DEATH" part of the AIS severity scale? - (ANSWER)No
Does a linear relationship exist between AIS severity codes? - (ANSWER)No
(T/F) Injuries within the same code may not be strictly compatible. - (ANSWER)T
AIS .9 - (ANSWER)Unknown
(T/F) The AIS single digit severity number indicates the relative severity of injury in an "average person"
who sustains the coded injury as his only injury. - (ANSWER)T
Average Patient - (ANSWER)Adult 25-40 years of age
Free of pre-existing conditions
Free of treatment complications
Receiving timely, appropriate care for the injury
Pre-dot Code - (ANSWER)6 digits to the left of decimal point
AIS Severity Number - (ANSWER)A single digit to the right of the decimal point.
Body Region - (ANSWER)The first number in the pre-dot code stands for?
Type of Anatomic Structure - (ANSWER)The second number in the pre-dot code stands for?
Specific Anatomic Structure - (ANSWER)The third & fourth numbers in the pre-dot code stands for?
Level of injury within the specific body region and anatomic structure - (ANSWER)The fifth & sixth
numbers in the pre-dot code stands for?
,CAISS EXAM (LEFORT I FRACTURE) QUESTIONS AND ANSWERS 2025
(T/F) AIS assesses the severity of single injuries. - (ANSWER)T
(T/F) The ISS is the sum of the squares of the highest AIS in each of the (3) most severity injured ISS body
regions. - (ANSWER)T
There are how many ISS body regions? - (ANSWER)6
ISS Body Regions - (ANSWER)Head & Neck
Face
Chest
Abdominal & Pelvic Contents
Extremities & Pelvic Girdle
External
Head & Neck - (ANSWER)Include injury to the brain, skull, cervical spine or neck organs.
(T/F) Asphyxia is assigned to the ISS Head region? - (ANSWER)T
Face - (ANSWER)Include injury to mouth, ears, eyes, nose and facial bones.
Chest - (ANSWER)Include injury to abdominal and pelvic contents, including all lesions to internal organs
in the respective cavities and injuries to diaphragm, rib cage and thoracic spine.
(T/F) Drowning is assigned to the Chest region? - (ANSWER)T
(T/F) The ISS is the sum of the squares of the highest AIS in each of the (5) most severity injured ISS body
regions. - (ANSWER)F
, CAISS EXAM (LEFORT I FRACTURE) QUESTIONS AND ANSWERS 2025
(T/F) There are 9 ISS body regions? - (ANSWER)F
(T/F) Asphyxia is assigned to the ISS Chest region? - (ANSWER)F
(T/F) Drowning is assigned to the Head & Neck region? - (ANSWER)f
Abdomen and Pelvic Area - (ANSWER)Include injury to Lumber spine lesions.
External - (ANSWER)Injuries that include lacerations, contusions, abrasions, hypothermia, electrical
injury, whole body injury and burns are assigned to what region?
1-75 - (ANSWER)The ISS score ranges from what to what?
(T/F) An ISS of 75 can be derived in 2 ways: one AIS .5 injury in each of three body regions or a single AIS
.6 injury. - (ANSWER)T
Should patients with a AIS .9 code be included in research studies? - (ANSWER)No
Underestimation of the ISS score - (ANSWER)Assigning injuries to too few body regions can result in
what?
Overestimation of the ISS Score - (ANSWER)Assigning injuries to too many ISS body regions can result in
what?
Injury - (ANSWER)The anatomic lesion resulting from a transfer of energy rather than a complication or
immediate sequelae is what?
Blunt, Penetration, Burns & Selected other Trauma - (ANSWER)The AIS includes injuries from the what
mechanisms?
