Human Immunodeficiency Virus (HIV) Infectious Classification

Why This Topic Matters

HIV-related diagnoses were classified under a specialized ICD-9-CM addendum with terminology updates and category revisions that affected record review and code selection. Understanding the scope of this material helps users recognize which classification version and guidance apply to HIV-related documentation from the relevant time period.

Article Sections

1. Introduction

   Provides the background, effective dates, and relationship of this addendum to earlier HIV classification material. It also summarizes the broad nature of the revisions to the official classification.

2. Background

   Discusses why a more specific HIV classification was needed and the public health and clinical context behind the development of the addendum. It describes the role of collaborating agencies and the timing of earlier interim classification changes.

3. Structure of the Classification

   Describes the overall organization of the HIV classification and its placement within ICD-9-CM. It also explains the general relationship between manifestations and category selection.

4. Definitions

   Outlines the conceptual grouping used in the HIV classification and the broad categories into which HIV infection was divided. It distinguishes the classification’s purpose from staging or severity systems.

5. Terminology

   Addresses official terminology issues and discourages use of outdated or ambiguous language. It includes guidance on how uncertain references to AIDS should be handled in documentation.

6. How to Use This Classification

   Summarizes the documentation expectations tied to HIV-related classification and the relationships that must be identified in the record. It also notes the general approach to selecting and applying the codes.

7. Reference

   Lists the cited reference supporting the addendum’s terminology and classification basis. This section is limited to source attribution.

8. Human immunodeficiency Virus (HIV) Infection (042-044)

   Introduces the terms used to represent HIV-related categories and the cross-referenced naming conventions included in the addendum. It serves as the entry point to the detailed category list.

9. 042 Human immunodeficiency virus infection with specified conditions

   Presents the first major HIV category and its broad subcategory structure. The section includes general notes and grouped manifestations tied to this category.

10. 043 Human immunodeficiency virus infection causing other specified conditions

    Covers the second major HIV category and its subcategories. It includes grouped manifestations and general notes for conditions associated with this classification area.

11. 044 Other human immunodeficiency virus infection

    Introduces the third major HIV category and its relationship to the broader classification. It includes the opening of the subcategory list for this section.