AHA Coding Clinic® for ICD-9 - 1992 Fourth Quarter; New/Revised Codes
Infectious Diseases
The ICD-9-CM classification has been expanded through the creation of fourth and fifth-digits to allow for the identification of particular types of microorganisms in several bacterial and viral disease categories. It should be noted that a code for infectious bacteria should not be assigned as the etiology of an infection based solely on gram stain, unless documented by the physician when the clinical record supports the diagnosis. In category 008, Intestinal infections due to other organisms, fifth-digits have been added to subcategory 008.0, Escherichia coli [E. coli], to allow for the identification of specific types of E. coli...
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Article Overview
This article explains selected ICD-9-CM infectious disease classification updates and why they matter for identifying organisms and infection sites more specifically. It is aimed at coders and others working with ICD-9-CM disease classification who need to understand the scope of changes affecting bacterial, viral, chlamydial, and candidal diagnoses.
Why This Topic Matters
The update reflects changes intended to improve specificity in infectious disease reporting and to reduce ambiguity in diagnosis classification. It is relevant to anyone reviewing older ICD-9-CM guidance or coding infectious conditions in records from the early 1990s.
Article Sections
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ICD-9-CM infectious disease classification updates
Introduces the overall classification changes and the purpose of adding greater specificity across infectious disease categories.
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Intestinal infections due to other organisms
Covers updates to intestinal infection categories involving bacterial and viral organisms, including expanded organism-specific subcategories.
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Pneumococcal and streptococcal pneumonia clarification
Discusses a classification clarification intended to distinguish related pneumonia entries and reduce confusion in code selection.
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Chlamydial infections
Summarizes the update related to sexually transmitted chlamydial diseases and notes the need to distinguish non-sexually transmitted cases.
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Candidal esophagitis and enteritis
Describes newly added candidal site-specific entries and the broader context for candidal infection reporting.
What You Will Learn
- How ICD-9-CM infectious disease categories were expanded for greater organism specificity
- Which broad types of intestinal infection updates are addressed
- How selected pneumonia classification changes are framed in the article
- What general update was made for chlamydial disease classification
- Which candidal infection sites were newly added in the update
Who Should Read This
- Medical coders
- Coding auditors
- Health information management professionals
- Clinical documentation staff
- Billers working with ICD-9-CM records
Codes Discussed
Code Ranges Discussed
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