Frank Longenine tested positive for HIV seven years ago. He has now begun showing signs and symptoms of the disease. Report his condition with code:

A) R75.
B) Z21.
C) B20.
D) Z20.6.

Code B20 is used for HIV disease, and it is the best choice to report Frank's condition as he has tested positive for HIV and he is now showing signs and symptoms of the disease. Option A (R75) is used for non-specific laboratory test findings, and option B (Z21) is used for asymptomatic HIV infection status. Option D (Z20.6) is used for contact with and (suspected) exposure to HIV.