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CAISS Comprehensive Study Guide Exam-Bank /
Expert Strategies, Review of Key Quizzes, and
Practice Questions for Guaranteed Success / Newest
2025/2026
Origins of AIS (3) - (answers)1) Standardized system
2) Classify type/severity of injury from MVC
3) Consensus
Injury descriptors are organized _________________________ ? -
(answers)Anatomically
Injury severity is ranked relative to its importance to _______________? -
(answers)The whole body
AIS reflects severity of single injuries and are unaffected by what three things? -
(answers)1) time
2) sequela
3) outcome
What type of scale does AIS use? - (answers)6 point ordinal scale
Which type of measurement is more variable? Anatomic or Physiologic? -
(answers)Physiologic
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Is clinical training necessary for collecting injury data? - (answers)NO
AIS is based on what three (3) factors? - (answers)1) anatomically- based
2) consensus driven
3) global
Severity is NOT contingent upon what two (2) factors? - (answers)1) Outcome
2) time
Numerical ranking of severity: 1 - (answers)minor
Numerical ranking of severity: 2 - (answers)moderate
Numerical ranking of severity: 3 - (answers)serious
Numerical ranking of severity: 4 - (answers)severe
Numerical ranking of severity: 5 - (answers)critical
Numerical ranking of severity: 6 - (answers)maximum (currently untreatable)
Is mortality a sole determinant of AIS severity? - (answers)NO
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Are all AIS data comparable from year to year? - (answers)NO (updates)
Is "DEATH" part of the severity scale? - (answers)NO
Is a patient who dies automatically assigned the highest AIS severity of 6? -
(answers)NO (patients w/ minor injuries can die)
Does a linear relationship exist between AIS severity codes? - (answers)NO (AIS 4
is more, NOT twice as severe as AIS 2)
Are all injuries within the same AIS code strictly compatible? - (answers)NO (tibia
fx & alveolar ridge are both AIS - 2, although one may be worse than the other,
both are considered 'moderate')
What AIS code is assigned to a patient with inadequate information regarding an
injury? - (answers)9
AIS single digit severity codes are based on what type of patient? -
(answers)Average
What four (4) things define the "average" patient? - (answers)1) 25-40 yrs old
2) no pre-existing conditions
3) no tx complications
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4) received timely/appropriate care
Approximately how many injury descriptors are included in AIS? - (answers)2000
What part of the AIS code is considered the "Pre-Dot Code?" - (answers)6 digits
BEFORE the decimal point (left)
What part of the AIS code is considered the "AIS Severity Number?" -
(answers)single digit after the decimal (right)
(T/F) The 6 digit pre-dot codes are unique and allow for more specificity and
accurate coding? - (answers)TRUE
The first digit in the pre-dot code corresponds to what? - (answers)Body Region
The second digit in the pre-dot code corresponds to what? - (answers)Type of
anatomic structure (skeletal, solid organ)
The third/fourth digits in the pre-dot code correspond to what? -
(answers)Specific anatomic structure (femur)
The fifth/sixth digits in the pre-dot code correspond to what? - (answers)Level of
injury within the specific body region and anatomic structure (NFS, minor, major)
CAISS Comprehensive Study Guide Exam-Bank /
Expert Strategies, Review of Key Quizzes, and
Practice Questions for Guaranteed Success / Newest
2025/2026
Origins of AIS (3) - (answers)1) Standardized system
2) Classify type/severity of injury from MVC
3) Consensus
Injury descriptors are organized _________________________ ? -
(answers)Anatomically
Injury severity is ranked relative to its importance to _______________? -
(answers)The whole body
AIS reflects severity of single injuries and are unaffected by what three things? -
(answers)1) time
2) sequela
3) outcome
What type of scale does AIS use? - (answers)6 point ordinal scale
Which type of measurement is more variable? Anatomic or Physiologic? -
(answers)Physiologic
,2|Page
Is clinical training necessary for collecting injury data? - (answers)NO
AIS is based on what three (3) factors? - (answers)1) anatomically- based
2) consensus driven
3) global
Severity is NOT contingent upon what two (2) factors? - (answers)1) Outcome
2) time
Numerical ranking of severity: 1 - (answers)minor
Numerical ranking of severity: 2 - (answers)moderate
Numerical ranking of severity: 3 - (answers)serious
Numerical ranking of severity: 4 - (answers)severe
Numerical ranking of severity: 5 - (answers)critical
Numerical ranking of severity: 6 - (answers)maximum (currently untreatable)
Is mortality a sole determinant of AIS severity? - (answers)NO
,3|Page
Are all AIS data comparable from year to year? - (answers)NO (updates)
Is "DEATH" part of the severity scale? - (answers)NO
Is a patient who dies automatically assigned the highest AIS severity of 6? -
(answers)NO (patients w/ minor injuries can die)
Does a linear relationship exist between AIS severity codes? - (answers)NO (AIS 4
is more, NOT twice as severe as AIS 2)
Are all injuries within the same AIS code strictly compatible? - (answers)NO (tibia
fx & alveolar ridge are both AIS - 2, although one may be worse than the other,
both are considered 'moderate')
What AIS code is assigned to a patient with inadequate information regarding an
injury? - (answers)9
AIS single digit severity codes are based on what type of patient? -
(answers)Average
What four (4) things define the "average" patient? - (answers)1) 25-40 yrs old
2) no pre-existing conditions
3) no tx complications
, 4|Page
4) received timely/appropriate care
Approximately how many injury descriptors are included in AIS? - (answers)2000
What part of the AIS code is considered the "Pre-Dot Code?" - (answers)6 digits
BEFORE the decimal point (left)
What part of the AIS code is considered the "AIS Severity Number?" -
(answers)single digit after the decimal (right)
(T/F) The 6 digit pre-dot codes are unique and allow for more specificity and
accurate coding? - (answers)TRUE
The first digit in the pre-dot code corresponds to what? - (answers)Body Region
The second digit in the pre-dot code corresponds to what? - (answers)Type of
anatomic structure (skeletal, solid organ)
The third/fourth digits in the pre-dot code correspond to what? -
(answers)Specific anatomic structure (femur)
The fifth/sixth digits in the pre-dot code correspond to what? - (answers)Level of
injury within the specific body region and anatomic structure (NFS, minor, major)
