Final answer:
The convention that appears in the Alphabetic Index to indicate that two codes will be required to completely code the diagnosis is [ ] Slanted brackets.
Step-by-step explanation:
The convention that appears in the Alphabetic Index to indicate that two codes will be required to completely code the diagnosis is option A) [ ] Slanted brackets. This convention is used to represent that multiple codes will be needed to accurately describe the diagnosis. Here's an example:
The patient's diagnosis includes both diabetes [
E11.9
] and hypertension [
I10
].