HIV 2 as the cause of diseases classified elsewhere

This code indicates that HIV-2 infection is the underlying cause of a disease or condition that is classified and coded elsewhere in the ICD-10-CM system. It signifies a causal link between the patient's HIV-2 status and another manifest illness, rather than coding the HIV-2 infection itself.

Use this code as a secondary diagnosis when documentation clearly states that HIV-2 is the etiology of a co-occurring condition, such as HIV-2 associated encephalopathy or HIV-2 related opportunistic infections. This code is appropriate when the patient is known to have HIV-2 and a related condition is being treated.

• Always sequence this code after the code for the specific disease or condition caused by HIV-2.
• Do not use this code if the patient's HIV-2 status is merely noted but not explicitly stated as the cause of another condition.
• Distinguish from codes for HIV-1 or unspecified HIV, as this code is specific to HIV-2 as the causative agent.