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2. ICD-10 Codes
3. Chapter - G00-G99
4. Section - G40-G47
5. Category - G40
6. G40.5

G40.5 - Epileptic seizures related to external causes

• Applicable to Epileptic seizures related to external causes
• The 2025 edition of ICD10-CM G40.5 became effective on October 1, 2024.
• This is the American ICD10-CM version of G40.5 - other international versions of ICD10 G40.5 may differ.
• G40.5 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• G40.5 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.

Code Additional Code:

• code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

• Epileptic seizures related to alcohol
• Epileptic seizures related to drugs
• Epileptic seizures related to hormonal changes
• Epileptic seizures related to sleep deprivation
• Epileptic seizures related to stress

codeAlso

• , if applicable, associated epilepsy and recurrent seizures (G40.-)

The following codes above G40.5 contain annotation back-references that may be applicable to G40.5:

• Chapter: G00-G99 - Diseases of the nervous system
• Section: G40-G47 - Episodic and paroxysmal disorders
• Category: G40 - Epilepsy and recurrent seizures

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.