GZB0ZZZElectroconvulsive Therapy, Unilateral-Single Seizure
- Billable / Specific Code
GZB0ZZZ is a billable ICD-10-PCS procedure code for Electroconvulsive Therapy, Unilateral-Single Seizure. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). The root operation Electroconvulsive Therapy involves the application of controlled electrical voltages to treat a mental health disorder. The Alphabetic Index lists this code under Electroshock therapy. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Electroconvulsive therapy.
Code Identity
PCS Table Breakdown
Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | G | Mental Health |
| 2 | Body System | Z | None |
| 3 | Type | B | Electroconvulsive Therapy |
| 4 | Qualifier | 0 | Unilateral-Single Seizure |
| 5 | Qualifier | Z | None |
| 6 | Qualifier | Z | None |
| 7 | Qualifier | Z | None |
In the ICD-10-PCS Alphabetic Index
The FY 2027 ICD-10-PCS Alphabetic Index refers to GZB0ZZZ as Electroshock therapy. These index entries lead to this code:
To code electroshock therapy, open the FY 2027 ICD-10-PCS Alphabetic Index at Electroshock therapy. The entry lists GZB0ZZZ directly as a complete, billable code.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Code History
- GZB1ZZZ — Electroconvulsive Therapy, Unilateral-Multiple Seizure
Similar Procedure Codes
Questions About GZB0ZZZ
Is GZB0ZZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Electroconvulsive Therapy, Unilateral-Single Seizure on inpatient claims from October 1, 2026 through September 30, 2027.
What is the ICD-10-PCS code for electroshock therapy?
The ICD-10-PCS Alphabetic Index lists Electroshock therapy under code GZB0ZZZ, Electroconvulsive Therapy, Unilateral-Single Seizure, billable on inpatient claims in fiscal year 2027.
What do the characters in GZB0ZZZ mean?
The code breaks down character by character: the 1st character G is the Section (Mental Health); the 2nd character Z is the Body System (None); the 3rd character B is the Type (Electroconvulsive Therapy); the 4th character 0 is the Qualifier (Unilateral-Single Seizure); the 5th character Z is the Qualifier (None); the 6th character Z is the Qualifier (None); the 7th character Z is the Qualifier (None).
What is the ICD-9-PCS equivalent of GZB0ZZZ?
Under the General Equivalence Mappings, Electroconvulsive Therapy, Unilateral-Single Seizure crosswalks to ICD-9-PCS 94.27 (Other electroshock therapy). The mapping is approximate, so confirm it fits the documentation.
