AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2016 Quarter 4; Ask the Editor
Lewy Body Dementia
When referencing the Alphabetic Index under Dementia, Lewy body, the coder is directed to codes G31.83 , Dementia with Lewy bodies, and [ F02.80 ], Dementia in other diseases classified elsewhere without behavioral disturbance. When referencing the Tabular List under category F02 -, Dementia in other diseases classified elsewhere, there is an instructional note to “Code first the underlying physiological condition, such as:” and the list includes Dementia with Lewy bodies ( G31.83 ), which is consistent with the Alphabetic Index. However, there is also an Excludes1 note under category F02 - that prohibits assigning dementia with Parkinsonism ( G31.83 ). Based on this inconsistency in the Tabular, how should Lewy body dementia be coded? ...
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Article Overview
This article is a brief ICD-10-CM coding reference focused on Lewy body dementia and related indexing/tabular cross-references. It is useful for coders working with dementia diagnosis coding and classification guidance in the Alphabetic Index and Tabular List.
Why This Topic Matters
Accurate diagnosis coding for dementia conditions depends on navigating the classification structure correctly, especially when a condition is referenced in more than one place. This article helps readers understand the scope of the reference material before consulting the full premium content.
What You Will Learn
- How Lewy body dementia is referenced within ICD-10-CM coding resources
- What classification areas are discussed in relation to this dementia diagnosis
- How the article frames index and tabular cross-references for related dementia coding topics
- Which parts of the ICD-10-CM system the reference material uses
Who Should Read This
- Medical coders
- Coding auditors
- Clinical documentation specialists
- Billing staff
- Healthcare compliance teams
Codes Discussed
Code Ranges Discussed
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