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Home/Diagnosis/ICD-10 Coding for Seizure Unspecified

ICD-10 Coding for Seizure Unspecified

G40.909
R56.9

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

Also Known as:
Convulsions Unspecified
Epileptic Seizure Unspecified
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Key Information: ICD-10 Coding for Seizure Unspecified

Essential facts and insights about ICD-10 Coding for Seizure Unspecified

Use ICD-10 code G40.909 for epilepsy, unspecified, not intractable, without status epilepticus, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Epilepsy, unspecified, not intractable, without status epilepticus

Billable Code
G40.909
Billable

Diagnostic Criteria

  • • Recurrent unprovoked seizures with normal MRI/EEG

Applicable To

  • • Epileptic seizures, unspecified

Important Notes

  • • Ensure epilepsy is confirmed before using this code.

Unspecified convulsions

Billable Code
R56.9
Billable

Diagnostic Criteria

  • • Single seizure event
  • • Negative epilepsy workup

Applicable To

  • • Convulsions NOS

Important Notes

  • • Avoid using for patients with a history of epilepsy.
Ancillary Codes

Additional codes that may be used with this diagnosis

F10.239

Alcohol withdrawal seizures

Use when seizures are due to alcohol withdrawal.

E88.9

Metabolic disorder-related seizures

Use when seizures are secondary to a metabolic disorder.

Frequently Asked Questions

When to use G40.909 vs R56.9?

Use G40.909 for confirmed epilepsy cases, even if unspecified. Use R56.9 for single acute seizures without a confirmed epilepsy diagnosis.

How to document unspecified seizures?

Document the date, time, duration, pre-ictal symptoms, ictal phase, and post-ictal state. Include EEG and MRI results if available.

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