AHA Coding Clinic® for ICD-9 - 1992 Fourth Quarter; New/Revised Codes
Atherosclerotic Peripheral Vascular Disease
Subcategory 440.2, Atherosclerosis of arteries of the extremities, has been expanded. The new fifth digits differentiate the type of atherosclerosis in the following manner: 440 Atherosclerosis 440.2 Of arteries of the extremities 440.20 unspecified 440.21 with intermittent claudication 440.22 with rest pain Other modifications made to improve data collection include an exclusion to code 443.9, Peripheral vascular disease, unspecified, for peripheral vascular disease due to atherosclerosis and appropriate index changes directing coders to the correct code for the various types of peripheral vascular disease. Vague diagnoses such as "peripheral vascular disease" or "intermittent...
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Article Overview
This article reviews updates to the classification of atherosclerosis of the arteries of the extremities and related peripheral vascular disease coding considerations. It is aimed at coding professionals who need to understand how the expanded diagnosis structure affects documentation review, index navigation, and data collection. The discussion also covers unspecified and poorly documented terminology at a high level, without providing detailed coding advice.
Why This Topic Matters
Accurate selection among related vascular diagnosis categories depends on clear documentation and familiarity with the updated structure. This article helps readers recognize the scope of the changes and why clarification of vague terminology may be necessary.
Article Sections
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Expanded subcategory 440.2
This section describes the expansion of atherosclerosis-related diagnosis classification for the extremities and the general purpose of the added structure. It focuses on the organization of the updated category rather than code-specific instructions.
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Other modifications
This section summarizes additional changes intended to improve data collection and diagnosis indexing for peripheral vascular disease topics. It also notes the presence of documentation clarification concerns at a high level.
What You Will Learn
- How the article frames updates to atherosclerosis-related diagnosis classification
- What broad documentation and indexing topics are addressed
- Why some peripheral vascular disease terminology may require clarification
- How the article positions these changes in relation to data collection
Who Should Read This
- Medical coders
- Coding auditors
- Clinical documentation staff
- Health information management professionals
Codes Discussed
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