AHA Coding Clinic® for ICD-9 - 2011 Issue 1; Ask the Editor

N-Methyl-D-Aspartate (NMDA) Receptor Antibody Encephalitis

The provider documented that a 27-year-old woman with NMDA (N-Methyl-D-aspartate) receptor antibody encephalitis was noted to have paranoid delusions and intermittent agitation. The patient had developed the NMDA receptor antibody encephalitis secondary to an ovarian teratoma. She was directly admitted for further workup and treatment of her presumed encephalitis. The provider’s final diagnostic statement listed, “NMDA receptor antibody encephalitis with psychotic disorder (paranoid delusions) most likely secondary to encephalitis.” What are the correct code assignments? ...

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