I need help coding this situation:

A 67-year old Medicare patietn presents to the office, exhiting symptoms of HIV infection. After detailed examination, symptoms are determined to be advanced AIDS with manifestation of Kaposi's sarcoma and other opportunistic infections.
I can not figure out what the diagosis code would be along with the CPT code and modierifer(s). Help Me THANK YOU!

Online codes, for example, are here:

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Sra