AHA Coding Clinic® for ICD-9 - 2005 Issue 4; VOLUMES 1 AND 2 NEW/REVISED CODES
Sleep Disorders and Other Related Conditions
Effective October 1, 2005, an extensive expansion has been made to the sleep disorder codes. The new codes allow for the classification of major types of sleep problems, including insomnia, hypersomnia, circadian sleep rhythm disorders, sleep apnea, parasomnias, and sleep related movement disorders. The new codes are divided between the mental health chapter and the nervous system chapter, based on the etiology of the condition. Existing sleep codes at subcategory 780.5, Sleep disturbances remain the default codes, but the index provides direction as to which code to assign based on the terminology documented in the medical record. New...
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Article Overview
This coding update article is for readers who need to understand how sleep disorders were reorganized and expanded in ICD-9-CM effective October 1, 2005. It covers the broad structure of the revised sleep disorder classifications, the split between mental health and nervous system categories, and related changes to existing sleep disturbance codes, exclusions, and inclusion terms.
Why This Topic Matters
Sleep-related diagnoses are commonly documented across multiple specialties, and accurate code selection depends on understanding how the classification structure changed. This article helps coders, auditors, and clinical staff recognize the scope of the update and where documentation may map within the revised sleep disorder framework.
Article Sections
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Overview of the 2005 sleep disorder code expansion
Introduces the scope and effective date of the coding update and explains the broad restructuring of sleep disorder classifications. Summarizes the major sleep-related condition groups addressed in the revision.
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Alcohol- and drug-induced sleep disorders
Covers the addition of new sleep disorder classifications tied to substance-related mental disorders. Notes related changes within the alcohol-induced and drug-induced disorder sections.
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Specific disorders of sleep of nonorganic origin
Describes updates to the nonorganic sleep disorder category, including added inclusion terms and revised entries for several sleep disturbance subtypes. Addresses how this category relates to other sleep disorder groupings.
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Organic sleep disorders
Presents the new organic sleep disorder category and its subcategories. Covers the major organic sleep disorder groupings and the related revisions to existing sleep disturbance coding.
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Revisions to existing sleep disturbance codes
Summarizes changes to legacy sleep disturbance codes and how they were revised, deleted, or linked to the new classification structure. Includes the broader relationship between older sleep codes and the new organic and nonorganic categories.
What You Will Learn
- How the sleep disorder classification was expanded and reorganized
- Which broad sleep disorder groupings were added or revised
- How substance-related sleep disorders were separated from other sleep conditions
- How organic and nonorganic sleep disorder categories are structured
- What types of legacy sleep disturbance entries were updated in the revision
Who Should Read This
- ICD-9-CM medical coders
- Coding auditors
- Clinical documentation specialists
- Revenue cycle staff
- Health information management professionals
Codes Discussed
Code Ranges Discussed
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