CASE DEFINITION FOR AIDS FOR SURVEILLANCE PURPOSES
1993 EXPANSION FOR ADULTS AND ADOLESCENTS
For national reporting, a case of AIDS is defined as an illness characterized by one or more of the listed “indicator” diseases,
depending on the status of laboratory evidence of HIV infection. The following information is excerpted from MMWR, Vol. 41,
No. RR-17, December 18, 1992, “1993 Revised Classification System for HIV Infection and Expanded Surveillance Case
Definition for AIDS Among Adolescents and Adults.”
APPENDIX B. Conditions Included in the 1993 AIDS Surveillance Case Definition
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HIV positive person with CD4 cell counts < 200/ul or a CD4 percent < 14% *
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Candidiasis of bronchi, trachea, or lungs
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Candidiasis, esophageal
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Cervical cancer, invasive *
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Coccidioidomycosis, disseminated or extrapulmonary
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Cryptococcosis, extrapulmonary
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Cryptosporidiosis, chronic intestinal (greater than 1 month's duration)
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Cytomegalovirus disease (other than liver, spleen, or nodes)
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Cytomegalovirus retinitis (with loss of vision)
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Encephalopathy, HIV-related
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Herpes simplex: chronic ulcer(s) (greater than 1 month's duration); or bronchitis, pneumonitis, or esophagitis
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Histoplasmosis, disseminated or extrapulmonary
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Isosporiasis, chronic intestinal (greater than 1 month's duration)
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Kaposi's sarcoma
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Lymphoma, Burkitt's (or equivalent term)
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Lymphoma, immunoblastic (or equivalent term)
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Lymphoma, primary, of brain
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Mycobacterium avium complex or M. kansasii, disseminated or extrapulmonary
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Mycobacterium tuberculosis, any site (pulmonary * or extrapulmonary)
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Mycobacterium, other species or unidentified species, disseminated or extrapulmonary
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Pneumocystis carinii pneumonia
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Pneumonia, recurrent *
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Progressive multifocal leukoencephalopathy
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Salmonella septicemia, recurrent
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Toxoplasmosis of brain
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Wasting syndrome due to HIV
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*Added in the 1993 expansion of the AIDS surveillance case definition.
Attachment 10
Operating Procedure 153-31