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Table 1 ICD-9 codes used to represent delirium

From: Documentation of delirium in the VA electronic health record

290.3 Senile dementia with delirium
291 Delirium with alcohol withdrawal
291.1 Delirium due to alcohol (chronic)
292 Drug abuse mental disorder
292.81 Delirium induced by drug
293 Delirium due to conditions classified elsewhere
293.1 Sub-acute delirium
780.09 Delirium not otherwise specified