ICD-10-CM Diagnostic Coding for Non-Epileptic Seizures The US Manual

ICD-10-CM Diagnostic Coding for Non-Epileptic Seizures The US Manual Used by Coders and Insurers to Determine MS-DRG Placement, Coverage, and Payment Policies Gregory L. Barkley, MD Ellen Riker, NAEC Executive Director

G40 Epilepsy and recurrent seizures Note: the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologicallyresistant), treatment resistant, refractory (medically) and poorly controlled Excludes1: conversion disorder with seizures (F44.5) convulsions NOS (R56.9) post traumatic seizures (R56.1) seizure (convulsive) NOS (R56.9) seizure of newborn (P90)

G40 Epilepsy and recurrent seizures G40.8 Other epilepsy and recurrent seizures Epilepsies and epileptic syndromes undetermined as to whether they are focal or generalized Landau-Kleffner syndrome G40.80 Other epilepsy G40.803 Other epilepsy, intractable, with status epilepticus G40.804 Other epilepsy, intractable, without status epilepticus G40.91 Epilepsy, unspecified, intractable Intractable seizure disorder NOS G40.911 Epilepsy, unspecified, intractable, with status epilepticus G40.919 Epilepsy, unspecified, intractable, without status epilepticus

F44 Dissociative and conversion disorders Includes: conversion hysteria conversion reaction hysteria hysterical psychosis F44.5 Conversion disorder with seizures or convulsions Conversion disorder with attacks or seizures Dissociative convulsions

R56 Convulsions, not elsewhere classified Excludes1: dissociative convulsions and seizures (F44.5) epileptic convulsions and seizures (G40.-) newborn convulsions and seizures (P90) R56.1 Post traumatic seizures Excludes1: post traumatic epilepsy (G40.-) R56.9 Unspecified convulsions Convulsion disorder Fit NOS Recurrent convulsions Seizure(s) (convulsive) NOS

ICD-10-CM Dx Codes Impact on MSDRG Placement and Coverage Policies G40 Codes and R56.9 track patients to the Seizure MS-DRGs 100 and 101 for hospital admissions with most EMU patients admitted under MS-DRG 101 – Seizures without major co-morbidities and complications. F44.5 tracks patients into one of the psychiatry MS-DRGs, which historically were weighted at a lower levels. ICD-10-CM Codes are also included in Medicare local and national coverage policies to set parameters on which patients can receive a covered service.