Electroconvulsive Therapy, Unilateral-Single Seizure

ValidICD-10-PCS procedure code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2014 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2014 Added to the draft code set draft Electroconvulsive Therapy, Unilateral-Single Seizure

What this code says

Each character is read in its own position, so the same letter means different things in different places. Definitions are CMS's own.

3. Root operation Electroconvulsive Therapy

The application of controlled electrical voltages to treat a mental health disorder

For example

Includes appropriate sedation and other preparation of the individual

Codes in the same group

Code	Description	Status
GZB1ZZZ	Electroconvulsive Therapy, Unilateral-Multiple Seizure	Retired
GZB2ZZZ	Electroconvulsive Therapy, Bilateral-Single Seizure	Valid
GZB3ZZZ	Electroconvulsive Therapy, Bilateral-Multiple Seizure	Retired
GZB4ZZZ	Other Electroconvulsive Therapy	Valid

At a glance

Code: GZB0ZZZ
System: ICD-10-PCS
Status: Valid
Valid: FY2016 onwards
In the code set: FY2016 onwards
Part of: GZB

Where this code sits

Section G Mental Health
Body system GZ None
Category GZB Mental Health, Electroconvulsive Therapy
This code GZB0ZZZ Electroconvulsive Therapy, Unilateral-Single Seizure

What each character means

G Section Mental Health
Z Body system None
B Root operation Electroconvulsive Therapy
0 Qualifier Unilateral-Single Seizure
Z Qualifier None
Z Qualifier None
Z Qualifier None

Source

ICD-10-PCS FY2027 code set, published by the Centers for Medicare and Medicaid Services (CMS).

Effective October 1, 2026.

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