COC ICD-10-CM Coding 3

Question 1

A patient with type 2 diabetes mellitus is seen for diabetic chronic kidney disease, stage 3. Which code set is correct?

Accepted Answer

E11.22, N18.3

Answer

E11.22 is the combination code for type 2 diabetes with diabetic chronic kidney disease, and N18.3 specifies stage 3 CKD.

Question 2

Which ICD-10-CM guideline governs the use of code Z23 (Encounter for immunization)?

Accepted Answer

Z23 is always the principal or first-listed diagnosis code

Answer

Z23 is assigned as the first-listed code when the sole reason for the encounter is to receive an immunization.

Question 3

A coder encounters the instruction 'Code also' in the ICD-10-CM Tabular List. What does this instruction mean?

Accepted Answer

An additional code may be required to fully describe the condition, and sequencing depends on severity

Answer

'Code also' instructs the coder to assign an additional code when applicable, with sequencing determined by the circumstances of the encounter.

Question 4

Under ICD-10-CM, how are pressure ulcers coded when a patient has a pressure ulcer that progresses from stage 2 to stage 3 during an outpatient encounter?

Accepted Answer

Code only the higher stage that the ulcer progressed to

Answer

Per ICD-10-CM guidelines, when a pressure ulcer progresses during an encounter, assign the code for the highest stage documented.

Question 5

A patient presents for an outpatient visit reporting pain in the left knee. The provider documents 'osteoarthritis versus internal derangement.' Which condition is coded?

Accepted Answer

Pain in left knee, because outpatient uncertain diagnoses are not coded

Answer

For outpatient encounters, uncertain diagnoses (versus, possible, probable) are not coded; code the sign or symptom—knee pain.

COC - Certified Outpatient Coder Practice Test

COC - Certified Outpatient Coder Practice Test

COC ICD-10-CM Coding 3