CAISS EXAM (2025/2026 UPDATED VERSION) – COMPLETE TEST BANK WITH
CORRECT ANSWERS AND DETAILED RATIONALES/ACTUAL EXAM QUESTIONS
WITH CORRECT ANSWERS CULMINATION OF EVERYTHING LEARNED TO PREPARE
FOR THE CAISS EXAM/GRADE A+ ASSURED
Question 1
In the AIS dictionary, what do the Boxed and Bold text descriptions represent?
A) Synonyms for clinical terms
B) Proper-named anatomical structures
C) Inclusive or exclusive information
D) Coding rules and conventions with directives for specific descriptions
E) Anatomical structures that must be identified for every code
Correct Answer: D) Represent AIS coding rules and conventions and contain directives to
assist in the appropriate use of specific descriptions.
Rationale: Boxed and bold text is a primary convention in the AIS dictionary. Unlike
parentheses which provide synonyms or brackets which provide inclusive/exclusive info,
boxed/bold text provides the "rules of the road" for a specific code or section, often giving
directives on what must be present to use that code.
Question 2
What is the function of Brackets [ ] in the AIS dictionary?
A) To separate injury descriptors of equal severity
B) To denote inclusive or exclusive information
C) To identify proper-named anatomical structures
D) To provide non-clinical synonyms
E) To identify the AIS severity score
Correct Answer: B) Denote inclusive or exclusive information.
Rationale: Brackets are used to clarify what is contained within a specific descriptor or
what is excluded from it. This helps the coder ensure that the specific injury they are
looking at matches the scope defined by the dictionary.
Question 3
Which punctuation mark is used in the AIS dictionary to separate injury descriptors that are
comparable in severity?
, 2
A) Commas
B) Periods
C) Semicolons
D) Colons
E) Hyphens
Correct Answer: C) Separate injury descriptors that are comparable in severity.
Rationale: Semicolons act as a separator between different ways an injury might be
described that all result in the same AIS severity score. This allows multiple clinical
descriptions to be grouped under a single code if they represent the same threat to life.
Question 4
In the AIS dictionary, Italics are specifically used to identify:
A) Anatomical structures
B) Directive rules
C) AIS severity scores
D) Proper-named anatomical structures, injuries, or OIS grades
E) Synonyms for surgical procedures
Correct Answer: D) Are used for proper-named anatomical structures or injuries, and for
OIS grades.
Rationale: Italics serve as a visual cue for eponyms (proper names like "LeFort" or
"Colles") and for the Organ Injury Scale (OIS) grades which are often included for
abdominal and vascular injuries to help correlate clinical findings with AIS codes.
Question 5
An injury assigned an AIS severity code of .3 is classified as:
A) Minor
B) Moderate
C) Serious
D) Severe
E) Critical
Correct Answer: C) Serious
Rationale: The AIS severity scale ranges from 1 to 6. .1 is Minor, .2 is Moderate, .3 is
, 3
Serious, .4 is Severe, .5 is Critical, and .6 is Maximum (currently untreatable). Memorizing
this scale is fundamental to CAISS certification.
Question 6
Which AIS severity code represents an injury that is currently "untreatable" or "Maximum"?
A) .4
B) .5
C) .6
D) .7
E) .9
Correct Answer: C) Maximum
Rationale: The code .6 is reserved for injuries that are so devastating that they are
considered unsurvivable or "maximum" severity. Examples include decapitation or
massive crush of the chest and abdomen. It does not simply mean "dead," but rather
reflects the anatomical severity.
Question 7
What does the AIS severity code .9 indicate?
A) Death within 24 hours
B) Maximum severity
C) Minor injury
D) Unknown severity
E) Multiple injuries in one region
Correct Answer: D) Unknown
Rationale: When the medical record lacks enough detail to assign a specific severity (1-6),
the coder must use .9. However, injuries with a .9 severity cannot be used to calculate an
ISS (Injury Severity Score), and these cases should generally be excluded from research
studies.
Question 8
Is "DEATH" a specific component of the AIS severity scale?
A) Yes, it is assigned AIS 6.
, 4
B) Yes, it is assigned AIS 7.
C) No, AIS is an anatomical severity scale, not an outcome scale.
D) No, death is only recorded in the ISS.
E) Only if it occurs in the ER.
Correct Answer: C) No
Rationale: The Abbreviated Injury Scale (AIS) is designed to measure the anatomical
severity of an injury, not the outcome. While a high AIS increases the probability of death,
an AIS .1 injury can result in death (e.g., a minor injury in an elderly patient with
comorbidities).
Question 9
Which of the following is TRUE regarding the relationship between AIS severity codes?
A) There is a linear relationship (AIS 4 is twice as severe as AIS 2).
B) There is no linear relationship between the codes.
C) AIS 6 is exactly six times more severe than AIS 1.
D) The codes are based on the cost of treatment.
E) The codes represent the length of hospital stay.
Correct Answer: B) Does a linear relationship exist between AIS severity codes? - No
Rationale: The AIS scale is ordinal, not linear. An AIS 4 injury is more severe than an AIS 2,
but it is not mathematically "double" the severity. The difference in mortality risk
increases exponentially as the AIS score moves from 1 to 6.
Question 10
The AIS severity number indicates the relative severity of an injury in an "Average
Person." How is this average person defined in the AIS manual?
A) A child under 12
B) An elderly patient over 65
C) An adult 25–40 years of age, free of pre-existing conditions
D) Any person regardless of age or health status
E) A professional athlete
Correct Answer: C) Adult 25-40 years of age, free of pre-existing conditions, free of
treatment complications, receiving timely care.
CORRECT ANSWERS AND DETAILED RATIONALES/ACTUAL EXAM QUESTIONS
WITH CORRECT ANSWERS CULMINATION OF EVERYTHING LEARNED TO PREPARE
FOR THE CAISS EXAM/GRADE A+ ASSURED
Question 1
In the AIS dictionary, what do the Boxed and Bold text descriptions represent?
A) Synonyms for clinical terms
B) Proper-named anatomical structures
C) Inclusive or exclusive information
D) Coding rules and conventions with directives for specific descriptions
E) Anatomical structures that must be identified for every code
Correct Answer: D) Represent AIS coding rules and conventions and contain directives to
assist in the appropriate use of specific descriptions.
Rationale: Boxed and bold text is a primary convention in the AIS dictionary. Unlike
parentheses which provide synonyms or brackets which provide inclusive/exclusive info,
boxed/bold text provides the "rules of the road" for a specific code or section, often giving
directives on what must be present to use that code.
Question 2
What is the function of Brackets [ ] in the AIS dictionary?
A) To separate injury descriptors of equal severity
B) To denote inclusive or exclusive information
C) To identify proper-named anatomical structures
D) To provide non-clinical synonyms
E) To identify the AIS severity score
Correct Answer: B) Denote inclusive or exclusive information.
Rationale: Brackets are used to clarify what is contained within a specific descriptor or
what is excluded from it. This helps the coder ensure that the specific injury they are
looking at matches the scope defined by the dictionary.
Question 3
Which punctuation mark is used in the AIS dictionary to separate injury descriptors that are
comparable in severity?
, 2
A) Commas
B) Periods
C) Semicolons
D) Colons
E) Hyphens
Correct Answer: C) Separate injury descriptors that are comparable in severity.
Rationale: Semicolons act as a separator between different ways an injury might be
described that all result in the same AIS severity score. This allows multiple clinical
descriptions to be grouped under a single code if they represent the same threat to life.
Question 4
In the AIS dictionary, Italics are specifically used to identify:
A) Anatomical structures
B) Directive rules
C) AIS severity scores
D) Proper-named anatomical structures, injuries, or OIS grades
E) Synonyms for surgical procedures
Correct Answer: D) Are used for proper-named anatomical structures or injuries, and for
OIS grades.
Rationale: Italics serve as a visual cue for eponyms (proper names like "LeFort" or
"Colles") and for the Organ Injury Scale (OIS) grades which are often included for
abdominal and vascular injuries to help correlate clinical findings with AIS codes.
Question 5
An injury assigned an AIS severity code of .3 is classified as:
A) Minor
B) Moderate
C) Serious
D) Severe
E) Critical
Correct Answer: C) Serious
Rationale: The AIS severity scale ranges from 1 to 6. .1 is Minor, .2 is Moderate, .3 is
, 3
Serious, .4 is Severe, .5 is Critical, and .6 is Maximum (currently untreatable). Memorizing
this scale is fundamental to CAISS certification.
Question 6
Which AIS severity code represents an injury that is currently "untreatable" or "Maximum"?
A) .4
B) .5
C) .6
D) .7
E) .9
Correct Answer: C) Maximum
Rationale: The code .6 is reserved for injuries that are so devastating that they are
considered unsurvivable or "maximum" severity. Examples include decapitation or
massive crush of the chest and abdomen. It does not simply mean "dead," but rather
reflects the anatomical severity.
Question 7
What does the AIS severity code .9 indicate?
A) Death within 24 hours
B) Maximum severity
C) Minor injury
D) Unknown severity
E) Multiple injuries in one region
Correct Answer: D) Unknown
Rationale: When the medical record lacks enough detail to assign a specific severity (1-6),
the coder must use .9. However, injuries with a .9 severity cannot be used to calculate an
ISS (Injury Severity Score), and these cases should generally be excluded from research
studies.
Question 8
Is "DEATH" a specific component of the AIS severity scale?
A) Yes, it is assigned AIS 6.
, 4
B) Yes, it is assigned AIS 7.
C) No, AIS is an anatomical severity scale, not an outcome scale.
D) No, death is only recorded in the ISS.
E) Only if it occurs in the ER.
Correct Answer: C) No
Rationale: The Abbreviated Injury Scale (AIS) is designed to measure the anatomical
severity of an injury, not the outcome. While a high AIS increases the probability of death,
an AIS .1 injury can result in death (e.g., a minor injury in an elderly patient with
comorbidities).
Question 9
Which of the following is TRUE regarding the relationship between AIS severity codes?
A) There is a linear relationship (AIS 4 is twice as severe as AIS 2).
B) There is no linear relationship between the codes.
C) AIS 6 is exactly six times more severe than AIS 1.
D) The codes are based on the cost of treatment.
E) The codes represent the length of hospital stay.
Correct Answer: B) Does a linear relationship exist between AIS severity codes? - No
Rationale: The AIS scale is ordinal, not linear. An AIS 4 injury is more severe than an AIS 2,
but it is not mathematically "double" the severity. The difference in mortality risk
increases exponentially as the AIS score moves from 1 to 6.
Question 10
The AIS severity number indicates the relative severity of an injury in an "Average
Person." How is this average person defined in the AIS manual?
A) A child under 12
B) An elderly patient over 65
C) An adult 25–40 years of age, free of pre-existing conditions
D) Any person regardless of age or health status
E) A professional athlete
Correct Answer: C) Adult 25-40 years of age, free of pre-existing conditions, free of
treatment complications, receiving timely care.
