AHA Coding Clinic® for ICD-9 - 2004 Issue 3; Ask the Editor
Dementia Secondary to Lithium
An elderly patient is admitted to the hospital with confusion and the final diagnosis is dementia secondary to Lithium toxicity. The Alphabetic Index classifies dementia due to drugs, to code 292.82, Drug-induced dementia. Should we be coding a symptom instead with the E code for adverse effect of a drug?We are having the same scenario with a patient who is experiencing hallucinations secondary to a drug reaction. This is classified to code 292.12, Drug-induced hallucinosis. ...
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Article Overview
This premium coding article addresses hospital coding questions involving psychiatric conditions attributed to medications, including confusion about whether to code a symptom or a drug-related diagnosis. It is aimed at coders, CDI professionals, and HIM staff who need to understand the broad coding framework for drug-induced mental disorders and related reporting of the causative medication. The article discusses the classification context, principal diagnosis assignment, and the role of external cause reporting at a high level.
Why This Topic Matters
Drug-related mental health presentations can be coded differently than symptom-only encounters, and incorrect selection can affect record accuracy and reporting. This article helps readers understand the relevant coding framework for these scenarios without replacing the full guidance in the premium content.
Article Sections
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Drug-induced dementia and hallucinosis scenarios
The article opens with clinical scenarios involving confusion and hallucinations attributed to medication exposure. It frames the coding questions around how these presentations are classified.
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Principal diagnosis and external cause reporting
This section discusses the general coding approach for drug-related psychiatric conditions in the hospital setting. It also addresses the role of reporting the medication responsible for the reaction.
What You Will Learn
- How the article frames drug-related psychiatric diagnoses in coding terms
- Why these scenarios are discussed in relation to category 292
- What general reporting concepts are involved when a medication is implicated
- How the article distinguishes diagnosis coding from symptom-only thinking
Who Should Read This
- Medical coders
- HIM professionals
- Clinical documentation improvement specialists
- Revenue cycle staff
Codes Discussed
Code Ranges Discussed
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