AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2024 Issue 4; New/Revised ICD-10-CM Codes

KCNQ2-Related Epilepsy

New subcategory G40.84, KCNQ2-related epilepsy, was created at subcategory G40.8, Other epilepsy and recurrent seizures, to specifically capture KCNQ2-related epilepsy. The following four codes were created to report whether the condition is intractable and whether there is status epilepticus:G40.841, KCNQ2-related epilepsy, not intractable, with status epilepticus G40.842, KCNQ2-related epilepsy, not intractable, without status epilepticus G40.843, KCNQ2-related epilepsy, intractable, with status epilepticus G40.844, KCNQ2-related epilepsy, intractable, without status epilepticus Code G40.842 is the appropriate code assignment for KCNQ2-related epilepsy that is not otherwise specified. KCNQ2-related epilepsy is one of the most common...

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