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

ICD-10 Coding for Tonic-Clonic Seizure

G40.4xx
G40.5xx

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

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

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

clinical:
  • • Patient has experienced two or more unprovoked seizures.
documentation:
  • • EEG findings support generalized epilepsy.

Applicable To

  • • Generalized tonic-clonic seizures without status epilepticus

Important Notes

  • • Ensure documentation specifies 'generalized tonic-clonic' and confirms epilepsy diagnosis.

Epileptic seizures related to external causes

Non-Billable
G40.5xx
Non-Billable

Diagnostic Criteria

clinical:
    documentation:
    • • Documentation of substance use as a cause

    Applicable To

    • • Drug-induced seizures
    • • Alcohol-induced seizures

    Important Notes

    • • Sequence substance use disorder code before G40.5xx.
    Ancillary Codes

    Additional codes that may be used with this diagnosis

    Z91.41

    Patient's noncompliance with medical treatment and regimen

    Use when noncompliance is documented as a contributing factor.

    Frequently Asked Questions

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

    The ICD-10 code for generalized tonic-clonic seizures without status epilepticus is G40.4xx. This code is used when epilepsy is confirmed with recurrent seizures.

    How do you document a tonic clonic seizure?

    Document the seizure type, frequency, intractability, and any triggers. Include EEG findings and treatment response to ensure accurate coding.

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