AHA Coding Clinic® for ICD-9 - 1995 Second Quarter
Clarification
A patient who is status post carotid artery occlusion with cerebral infarction six weeks ago is admitted to have an endarterectomy. Since fifth digits have been created for use with categories 433 , Occlusion and stenosis of precerebral arteries, and 434 , Occlusion of cerebral arteries, to indicate occlusion with or without cerebral infarction, would the fifth-digit "1" to indicate with infarction be appropriate for this admission? ...
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Article Overview
This premium coding article addresses clarification questions about ICD-9-CM categories 433 and 434 and the way fifth digits are discussed in relation to occlusion, stenosis, and cerebral infarction. It is aimed at coders and coding educators who need to understand the scope of the guidance, the kinds of clinical scenarios being discussed, and why accurate physician documentation review matters when assigning these diagnosis codes.
Why This Topic Matters
The article helps readers distinguish between similar ICD-9-CM diagnosis categories and understand what kind of documentation is being discussed in the clarification examples. It is relevant for coding accuracy, physician queries, and reviewing stroke-related records in a consistent way.
Article Sections
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Explanation of fifth digits for categories 433 and 434
Introduces the ICD-9-CM categories being discussed and frames the clarification around fifth-digit usage and documentation interpretation.
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Examples involving carotid artery findings and stroke
Presents clinical scenarios involving carotid occlusion, cerebral infarction, and the relationship between imaging findings and the physician’s diagnosis.
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Clarification - endarterectomy - status carotid occlusion w/infarct
Addresses a later admission scenario involving prior carotid occlusion with infarction and a planned procedure, focusing on documentation questions raised by the case.
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Carotid Endarterectomy
Provides the procedure context for the admission scenario and the documentation issue being clarified.
What You Will Learn
- How the article frames clarification issues for ICD-9-CM categories 433 and 434
- What kinds of stroke-related documentation scenarios are discussed
- Why physician documentation and record review are central to the clarification examples
- How the article presents admission and history-based coding questions in a procedural context
Who Should Read This
- Medical coders
- Coding educators
- Clinical documentation review staff
- HIM professionals
Codes Discussed
Code Ranges Discussed
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