ICD-10-PCS Code For Bilateral-Single Seizure: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group GZB2 includes procedures performed to apply controlled electrical voltages to induce a bilateral single seizure. These ICD-10-PCS codes are used for inpatient documentation when electroconvulsive therapy is administered to treat a mental health disorder requiring a single bilateral seizure session. Accurate coding within the ICD-10-PCS GZB2 group is essential for proper inpatient reimbursement, as it captures the specific procedure performed and supports clinical documentation accuracy.

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Bilateral-Single Seizure Electroconvulsive Therapy Procedure Overview

Procedures in this group involve the application of controlled electrical voltages to induce a single bilateral seizure for therapeutic purposes in the treatment of mental health disorders. These procedures are classified in the Mental Health section of the International Classification of Diseases, 10th Revision, Procedure Coding System and do not target an anatomical body system. Accurate coding identifies the specific electroconvulsive therapy performed and supports correct inpatient reimbursement and clinical recordkeeping.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
G	Section	Mental Health
Z	Body System	None
B	Operation	Electroconvulsive Therapy
2	Body Part	Bilateral-Single Seizure

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ICD-10-PCS Code For Bilateral-Single Seizure: Procedure Code Group Overview

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Bilateral-Single Seizure Electroconvulsive Therapy Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
G	Section	Mental Health
Z	Body System	None
B	Operation	Electroconvulsive Therapy
2	Body Part	Bilateral-Single Seizure

When to Use

Use a code from this group when electroconvulsive therapy is delivered to induce one bilateral seizure as part of a therapeutic treatment plan for a mental health disorder in the inpatient setting. Do not use these codes for unilateral stimulation, multiple seizure sessions in the same encounter, or non-therapeutic stimulation events.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
GZB2ZZZ	Electroconvulsive Therapy, Bilateral-Single Seizure

Typical Clinical Scenarios

An adult patient with severe, treatment-resistant major depressive disorder is admitted electively to an inpatient psychiatric unit after failing multiple medication trials and psychotherapy; the team plans a supervised, single-session electroconvulsive therapy to induce a bilateral seizure as part of acute stabilization and rapid symptom relief. Typical codes: GZB2ZZZ
An elderly patient with catatonia and refusal to eat presents to the emergency department and is admitted for urgent psychiatric care when benzodiazepines are ineffective; clinicians perform a single bilateral electroconvulsive therapy session to promptly alleviate catatonic symptoms and restore oral intake. Typical codes: GZB2ZZZ
A patient hospitalized for severe bipolar depression who previously responded to bilateral electroconvulsive therapy is readmitted for a planned maintenance intervention after relapse; a single inpatient bilateral seizure session is delivered to recapture prior clinical response. Typical codes: GZB2ZZZ

ICD-10-PCS Code For Unilateral-Single Seizure: Procedure Code Group Overview

GZB4-OTHER-ELECTROCONVULSIVE-THERAPY

ICD-10-PCS Code For Other Electroconvulsive Therapy: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
GZB2ZZZ	Electroconvulsive Therapy, Bilateral-Single Seizure

Typical Clinical Scenarios

An adult patient with severe, treatment-resistant major depressive disorder is admitted electively to an inpatient psychiatric unit after failing multiple medication trials and psychotherapy; the team plans a supervised, single-session electroconvulsive therapy to induce a bilateral seizure as part of acute stabilization and rapid symptom relief. Typical codes: GZB2ZZZ
An elderly patient with catatonia and refusal to eat presents to the emergency department and is admitted for urgent psychiatric care when benzodiazepines are ineffective; clinicians perform a single bilateral electroconvulsive therapy session to promptly alleviate catatonic symptoms and restore oral intake. Typical codes: GZB2ZZZ
A patient hospitalized for severe bipolar depression who previously responded to bilateral electroconvulsive therapy is readmitted for a planned maintenance intervention after relapse; a single inpatient bilateral seizure session is delivered to recapture prior clinical response. Typical codes: GZB2ZZZ

ICD-10-PCS Code For Unilateral-Single Seizure: Procedure Code Group Overview

GZB4-OTHER-ELECTROCONVULSIVE-THERAPY

ICD-10-PCS Code For Other Electroconvulsive Therapy: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

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ICD-10-PCS Code For Bilateral-Single Seizure: Procedure Code Group Overview

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Bilateral-Single Seizure Electroconvulsive Therapy Procedure Overview

Code Attributes

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Bilateral-Single Seizure Electroconvulsive Therapy Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

References

ICD-10-PCS Code For Bilateral-Single Seizure: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Bilateral-Single Seizure: Procedure Code Group Overview policy alerts

Bilateral-Single Seizure Electroconvulsive Therapy Procedure Overview

Code Attributes

ICD-10-PCS Code For Bilateral-Single Seizure: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Bilateral-Single Seizure: Procedure Code Group Overview policy alerts

Bilateral-Single Seizure Electroconvulsive Therapy Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code represents bilateral single-seizure electroconvulsive therapy?

In which ICD-10-PCS section is the bilateral-single seizure ECT procedure classified?

What does accurate coding within the GZB2 group support?

What procedural attributes are listed for the GZB2 code group?

Is `GZB2ZZZ` used for treatments targeting an anatomical body system?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code represents bilateral single-seizure electroconvulsive therapy?

In which ICD-10-PCS section is the bilateral-single seizure ECT procedure classified?

What does accurate coding within the GZB2 group support?

What procedural attributes are listed for the GZB2 code group?

Is `GZB2ZZZ` used for treatments targeting an anatomical body system?

References