AHA Coding Clinic® for ICD-9 - 1986 March - April; Coding Guidelines
Late Effects of Cerebrovascular Disease
Note: As of October 1, 1997, category 438 has been expanded to fourth and fifth digits to indicate specific types of late effects of cerebrovascular disease (e.g., aphasia (438.11), hemiplegia (438.2x), monoplegia (438.3x and 438.4x)). Category 438 is used to indicate conditions classifiable to categories 430-437 as the causes of late effects (neurologic deficits), themselves classified elsewhere. These "late effects" include neurologic deficits that persist after initial onset of conditions classifiable to 430-437. Unlike other late effects, the neurologic deficits caused by cerebrovascular disease are present from the onset rather than arising months later...
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Article Overview
This article covers ICD-9-CM guidance for reporting late effects related to cerebrovascular disease, including how the category was expanded, when related history coding is used, and how example cases are classified alongside other diagnosis categories. It is relevant to coders working with neurology, rehabilitation, stroke history, and legacy ICD-9-CM reporting rules.
Why This Topic Matters
Accurate handling of cerebrovascular late effects depends on understanding how the legacy ICD-9-CM category is structured and when related history or current-condition coding applies. This article helps coders interpret those rules in the context of rehabilitation and stroke-related records.
Article Sections
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Late effects of cerebrovascular disease
Overview of the category and its relationship to prior cerebrovascular conditions. Includes summary guidance on reporting persistent neurologic deficits and related history coding.
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Examples
Illustrative case summaries showing how the guidance is applied in different clinical scenarios. Also references several related diagnosis categories and legacy code expansions.
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Special Notice
Editorial and correction notice information associated with the source material. Includes a clarification related to coding clinic content and guideline revision status.
What You Will Learn
- How the article frames late effects of cerebrovascular disease in ICD-9-CM
- What kinds of legacy coding updates are noted for this topic
- How related history coding is addressed in the source guidance
- What the example section is intended to illustrate
- What correction or clarification notice accompanies the article
Who Should Read This
- Medical coders
- Coding educators
- Compliance staff
- Health information management professionals
- Rehabilitation documentation teams
Codes Discussed
Code Ranges Discussed
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