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Home/Diagnosis/ICD-10 Coding for Absence Seizure

ICD-10 Coding for Absence Seizure

G40.A09
G40.409

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

Also Known as:
Petit Mal Seizure
Staring Spells
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Key Information: ICD-10 Coding for Absence Seizure

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

Use ICD-10 code G40.A09 for absence epileptic syndrome, not intractable, without status epilepticus, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Absence epileptic syndrome, not intractable, without status epilepticus

Billable Code
G40.A09
Billable

Diagnostic Criteria

clinical:
  • • Presence of 3 Hz spike-wave on EEG
documentation:
  • • Detailed description of seizure semiology

Applicable To

  • • Typical absence seizures

Important Notes

  • • Ensure EEG findings are documented to support the use of this code.

Other generalized epilepsy and epileptic syndromes, with status epilepticus

Billable Code
G40.409
Billable

Diagnostic Criteria

clinical:
  • • EEG showing prolonged 3 Hz activity
  • • Clinical documentation of status epilepticus

Applicable To

  • • Absence status epilepticus

Important Notes

  • • Status epilepticus must be clearly documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

R56.9

Unspecified convulsions

Use when the type of seizure is unclear or not documented.

Frequently Asked Questions

What is the ICD-10 code for absence seizures?

The ICD-10 code for absence seizures not intractable and without status epilepticus is G40.A09. This code is used when EEG confirms 3 Hz spike-wave discharges.

How are absence seizures documented?

Document absence seizures by noting the clinical presentation, EEG findings (3 Hz spike-wave), and any associated conditions like status epilepticus.

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