HIV/AIDS is it in writing that HIV/AIDS guidelines take precedence over all guidelines

Patient admitted with malignant HTN with HTN ESRD and ESRD also due to AIDS.
Which would be the PDX 403.91 or 042?

re: HIV/AIDS is it in writing that HIV/AIDS guidelines take precedence over all guidelines

Section I.C.1.b.1
Official coding guidelines
http://www.ama-assn.org/resources/doc/cpt/icd9cm_coding_guidelines_08_09_full.pdf