B20: Human immunodeficiency virus [HIV] disease resulting in infectious and parasitic diseases
B20.8: HIV disease resulting in other infectious and parasitic diseases
HIV disease resulting in other infectious and parasitic diseases, coded as B20.8 in the ICD-10, refers to a condition where an individual with Human Immunodeficiency Virus (HIV) develops additional infectious or parasitic diseases due to the immune suppression caused by HIV. HIV attacks the immune system, specifically the CD4 cells (T cells), gradually weakening the body's natural defense against infections and diseases. This immunocompromised state allows opportunistic infections and diseases, which are usually effectively managed by a healthy immune system, to present and progress. These may include tuberculosis, pneumonia, candidiasis, cytomegalovirus (CMV) infection, and various types of parasitic infestations. The common symptoms of these secondary infections depend on the particular infection but might include fever, weight loss, fatigue, and diarrhea. Due to the wide range of possible secondary infections, the affected body systems can also vary greatly.
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