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HCC 79 – Seizures

This month we are focusing on ICD-10 Category G40 – Seizures.

The codes in this category are:

ICD-10 Description
G40.0 Localization-related (focal) (partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
G40.1 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
G40.2 Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
G40.3 Generalized idiopathic epilepsy and epileptic syndromes
G40.4 Other generalized epilepsy and epileptic syndromes
G40.5 Epileptic seizures related to external causes
G40.8 Other epilepsy and recurrent seizures
G40.9 Epilepsy, unspecified

When selecting a code from Category G40, it’s important to assign the appropriate 5th and 6th characters to identify if the seizure is intractable versus not intractable and with or without status epilepticus.

In order to select the code with the highest level of specificity, the documentation must indicate if the seizure is:

  • Focal or generalized
  • Idiopathic or symptomatic
  • With or without status epilepticus
  • Intractable or not intractable

According to the instructional notes, these terms are to be considered equivalent to intractable:

  • Pharmacoresistant (pharmacologically-resistant)
  • Treatment-resistant
  • Refractory (medically)
  • Poorly controlled

If you have any questions or would like to talk more about coding for this or any other chronic conditions, contact us at CodingCounts@healthalliance.org.

 

AAPC ICD-10 CM Expert for Physicians and Hospitals
Mayo Clinic