In both ICD-9 and ICD-10, the convention code first underlying disease means ____.
A) the code may not be used as the first code
B) the disease is not otherwise specified.
C) alternative wording must be used
D) two codes are required separately to code the diagnosis
E) ICD does not provide a code specific enough for the patient's condition

Question

Quizplus · Accepted Answer

The "code first underlying disease" convention indicates that the code should not be used as the primary diagnosis code. Instead, the underlying disease should be coded first.

In Both ICD-9 and ICD-10, the Convention Code First Underlying