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Home/Diagnosis/ICD-10 Coding for Grand Mal Seizure

ICD-10 Coding for Grand Mal Seizure

G40.4xx
R56.9

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

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

Essential facts and insights about ICD-10 Coding for Grand Mal Seizure

Use ICD-10 code G40.4xx for other generalized epilepsy and epileptic syndromes, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Other generalized epilepsy and epileptic syndromes

Non-Billable
G40.4xx
Non-Billable

Diagnostic Criteria

  • • Recurrent generalized seizures with EEG confirmation.

Applicable To

  • • Grand mal seizures unspecified

Important Notes

  • • Ensure epilepsy diagnosis is documented for G40.4xx.

Unspecified convulsions

Billable Code
R56.9
Billable

Diagnostic Criteria

  • • Clinical observation of a single seizure
  • • Normal EEG and MRI

Applicable To

  • • Single seizure episode

Important Notes

  • • Document as a single, isolated event.
Ancillary Codes

Additional codes that may be used with this diagnosis

R56.9

Unspecified convulsions

For single seizure events without epilepsy diagnosis.

Frequently Asked Questions

What is the ICD-10 code for a grand mal seizure?

The ICD-10 code for a grand mal seizure, also known as a generalized tonic-clonic seizure, is G40.4xx when associated with epilepsy.

How do you document a generalized tonic-clonic seizure?

Document the seizure type, duration, EEG findings, and postictal state to ensure accurate coding and clinical management.

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