D521 Final
2025/2026
Exam Prep Guide
(Expert Verified Questions and
Answers)
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, D521 D521
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1. What are the 7 characters (for- 1. S > Section
mat) of an ICD-10-PCS code? 2. B > Body System
3. R > root operation
4. D > Designation (body part)
5. A > approach
6. D > device
7. Q > qualifier
2. Which letters are not used in I and O
ICD-10-PCS? (d/t possible confusion with the numbers 1 and 0)
3. Brackets [ ] - what do they mean used in Tabular List to enclose synonyms, alternative
in ICD-10-CM? wording, or explanatory phrases
4. Parentheses ( ) - what do they used in both TL and AI to enclose supplementary words
mean in ICD-10-CM? that don't affect the code number
5. Colons : - what do they mean in This punctuation mark is used in TL after an incomplete
ICD-10-CM? term that needs the word(s) after this punctuation mark
to make it assignable to a category
6. NEC - what does this mean in "Not elsewhere classifiable" or "other specified"
ICD-10-CM guidelines?
used in both AI and TL
means a code matching the information in the documen-
tation does not exist
7. NOS - what does this mean in "Not otherwise specified" or "unspecified"
ICD-10-CM guidelines?
used in both the TL and AI
means the documentation is insufficient to assign a more
specific code
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8. And - what does this mean in This guide term means either "and" or "or"
ICD-10-CM guidelines?
9. With or In - what do they mean in guide terms meaning either "associated with" or "due to"
ICD-10-CM guidelines?
10. See - what does this mean in used in AI following a main term
ICD-10-CM guidelines?
indicates that another term should be referenced to lo-
cate the correct code
11. See Also - what does this mean in used in the AI following a main term
ICD-10-CM guidelines?
means may need to reference another main term that
has useful additional information if the original main term
does not provide the necessary code
12. Code First - what does this mean used on manifestation codes for certain conditions that
in ICD-10-CM guidelines? have an etiology and multiple manifestations.
mandates that the underlying etiology be coded first,
then the manifestation codes
13. Use Additional Code - what does used on etiology codes to remind coders to also code the
this mean in ICD-10-CM guide- manifestation
lines?
14. Code Also - what does this mean means 2 codes may be needed to fully describe the
in ICD-10-CM guidelines? condition
sequencing not specified
15. 7 characters
2025/2026
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ICD-10-PCS codes must always
have how many characters?
16. ICD-10-CM codes must have be- 3 and 7 characters
tween ___ and ___ characters
17. ICD-9-CM diagnosis characteris- 1. 3-5
tics: 2. Can be either number or letters E or V
1. # to # characters long? 3. numbers
2. 1st character is a number or 4. type
letter? 5. 14,025
3. 2nd-5th characters are letters 6. no
or numbers? 7. no
4. injuries are grouped by what? 8. limited
5. How many DX codes? 9. some concepts are missing
6. codes for laterality?
7. codes for initial vs subsequent
visits?
8. combo codes?
9. abundant concepts?
18. ICD-10-CM characteristics: 1. 3-7
1. # to # characters long? 2. letter
2. 1st character is a letter or num- 3. number
ber? 4. letters or numbers
3. 2nd character is a letter or 5. anatomical site
number? 6. 69,823
4. 3rd - 7th characters are letter or 7. Decimal after 3rd character
numbers? 8. Yes
5. Injuries are grouped by what? 9. Yes
6. How many DX codes? 10. Yes
7. Does it use decimals? 11. Anatomic site
2025/2026
2025/2026
Exam Prep Guide
(Expert Verified Questions and
Answers)
Plus A+ Grade Guarantee
, D521 D521
Study online at https://quizlet.com/_evqxjs
1. What are the 7 characters (for- 1. S > Section
mat) of an ICD-10-PCS code? 2. B > Body System
3. R > root operation
4. D > Designation (body part)
5. A > approach
6. D > device
7. Q > qualifier
2. Which letters are not used in I and O
ICD-10-PCS? (d/t possible confusion with the numbers 1 and 0)
3. Brackets [ ] - what do they mean used in Tabular List to enclose synonyms, alternative
in ICD-10-CM? wording, or explanatory phrases
4. Parentheses ( ) - what do they used in both TL and AI to enclose supplementary words
mean in ICD-10-CM? that don't affect the code number
5. Colons : - what do they mean in This punctuation mark is used in TL after an incomplete
ICD-10-CM? term that needs the word(s) after this punctuation mark
to make it assignable to a category
6. NEC - what does this mean in "Not elsewhere classifiable" or "other specified"
ICD-10-CM guidelines?
used in both AI and TL
means a code matching the information in the documen-
tation does not exist
7. NOS - what does this mean in "Not otherwise specified" or "unspecified"
ICD-10-CM guidelines?
used in both the TL and AI
means the documentation is insufficient to assign a more
specific code
2025/2026
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8. And - what does this mean in This guide term means either "and" or "or"
ICD-10-CM guidelines?
9. With or In - what do they mean in guide terms meaning either "associated with" or "due to"
ICD-10-CM guidelines?
10. See - what does this mean in used in AI following a main term
ICD-10-CM guidelines?
indicates that another term should be referenced to lo-
cate the correct code
11. See Also - what does this mean in used in the AI following a main term
ICD-10-CM guidelines?
means may need to reference another main term that
has useful additional information if the original main term
does not provide the necessary code
12. Code First - what does this mean used on manifestation codes for certain conditions that
in ICD-10-CM guidelines? have an etiology and multiple manifestations.
mandates that the underlying etiology be coded first,
then the manifestation codes
13. Use Additional Code - what does used on etiology codes to remind coders to also code the
this mean in ICD-10-CM guide- manifestation
lines?
14. Code Also - what does this mean means 2 codes may be needed to fully describe the
in ICD-10-CM guidelines? condition
sequencing not specified
15. 7 characters
2025/2026
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ICD-10-PCS codes must always
have how many characters?
16. ICD-10-CM codes must have be- 3 and 7 characters
tween ___ and ___ characters
17. ICD-9-CM diagnosis characteris- 1. 3-5
tics: 2. Can be either number or letters E or V
1. # to # characters long? 3. numbers
2. 1st character is a number or 4. type
letter? 5. 14,025
3. 2nd-5th characters are letters 6. no
or numbers? 7. no
4. injuries are grouped by what? 8. limited
5. How many DX codes? 9. some concepts are missing
6. codes for laterality?
7. codes for initial vs subsequent
visits?
8. combo codes?
9. abundant concepts?
18. ICD-10-CM characteristics: 1. 3-7
1. # to # characters long? 2. letter
2. 1st character is a letter or num- 3. number
ber? 4. letters or numbers
3. 2nd character is a letter or 5. anatomical site
number? 6. 69,823
4. 3rd - 7th characters are letter or 7. Decimal after 3rd character
numbers? 8. Yes
5. Injuries are grouped by what? 9. Yes
6. How many DX codes? 10. Yes
7. Does it use decimals? 11. Anatomic site
2025/2026
