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Home/Diagnosis/ICD-10 Coding for Seizure Disorder Not Otherwise Specified

ICD-10 Coding for Seizure Disorder Not Otherwise Specified

G40.909
R56.9

Complete ICD-10-CM coding and documentation guide for icd-10 coding for seizure disorder not otherwise specified includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Seizure Disorder NOS
Epilepsy NOS
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Key Information: ICD-10 Coding for Seizure Disorder Not Otherwise Specified

Essential facts and insights about ICD-10 Coding for Seizure Disorder Not Otherwise Specified

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

clinical:
  • • Patient has a history of two or more unprovoked seizures.
documentation:
  • • Epilepsy diagnosis is confirmed without specific type or intractability noted.

Applicable To

  • • Seizure disorder NOS

Important Notes

  • • Ensure documentation specifies epilepsy diagnosis to avoid using R56.9.

Unspecified convulsions

Billable Code
R56.9
Billable

Diagnostic Criteria

clinical:
  • • Single seizure event without prior history of epilepsy

Applicable To

  • • Single seizure event

Important Notes

  • • Ensure no epilepsy diagnosis is documented when using this code.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z82.49

Family history of epilepsy

Use to support medical necessity for epilepsy-related testing.

Frequently Asked Questions

What is the ICD-10 code for seizure disorder not otherwise specified?

The ICD-10 code for seizure disorder not otherwise specified is G40.909, used for unspecified epilepsy not intractable and without status epilepticus.

When should R56.9 be used instead of G40.909?

R56.9 should be used for single seizure events without a confirmed epilepsy diagnosis, while G40.909 is for confirmed epilepsy cases.

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