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Home/Diagnosis/ICD-10 Coding for Generalized Tonic-Clonic Seizure

ICD-10 Coding for Generalized Tonic-Clonic Seizure

G40.409
G40.411

Complete ICD-10-CM coding and documentation guide for icd-10 coding for generalized tonic-clonic seizure includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Grand Mal Seizure
GTCS
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Key Information: ICD-10 Coding for Generalized Tonic-Clonic Seizure

Essential facts and insights about ICD-10 Coding for Generalized Tonic-Clonic Seizure

Use ICD-10 code G40.409 for other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Other generalized epilepsy and epileptic syndromes, not intractable, without status epilepticus

Billable Code
G40.409
Billable

Diagnostic Criteria

clinical:
  • • Recurrent generalized seizures confirmed by EEG
documentation:
  • • Explicit mention of 'generalized tonic-clonic seizures'

Applicable To

  • • Generalized tonic-clonic seizures
  • • Grand mal seizures

Important Notes

  • • Ensure documentation specifies 'generalized tonic-clonic' to avoid unspecified coding.

Other generalized epilepsy and epileptic syndromes, intractable, without status epilepticus

Billable Code
G40.411
Billable

Diagnostic Criteria

clinical:
  • • Seizures refractory to two or more antiepileptic drugs
  • • EEG confirmation of generalized epilepsy

Applicable To

  • • Intractable generalized tonic-clonic seizures

Important Notes

  • • Document intractability clearly to justify this code.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z91.14

Noncompliance with medication regimen

Use if noncompliance with antiepileptic drugs is documented.

Frequently Asked Questions

What is the ICD-10 code for generalized tonic-clonic seizure?

The ICD-10 code for generalized tonic-clonic seizure is G40.409 for non-intractable cases and G40.411 for intractable cases.

How do you code a single seizure episode?

A single seizure episode without a diagnosis of epilepsy is coded as R56.9.

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