AHA Coding Clinic® for ICD-9 - 2009 Issue 3; Ask the Editor

Acute Delirium due to Dementia

The patient is an 87-year-old male with a documented history of dementia, who was admitted to the hospital with transient changes in his mental status following a medical procedure. He was transferred to a subacute rehab facility for further management of acute delirium and behavior problems. The transfer summary listed delirium secondary to dementia as the final diagnosis. What is the appropriate code assignment for delirium due to dementia? I am reluctant to use code 290.3, Senile dementia with delirium, since the provider does not specifically document senile dementia. ...

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