GZB4ZZZOther Electroconvulsive Therapy
- Billable / Specific Code
GZB4ZZZ is a billable ICD-10-PCS procedure code for Other Electroconvulsive Therapy. 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 | 4 | Other Electroconvulsive Therapy |
| 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 GZB4ZZZ 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 GZB4ZZZ 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.
Similar Procedure Codes
Questions About GZB4ZZZ
Is GZB4ZZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Other Electroconvulsive Therapy 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 GZB4ZZZ, Other Electroconvulsive Therapy, billable on inpatient claims in fiscal year 2027.
What do the characters in GZB4ZZZ 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 4 is the Qualifier (Other Electroconvulsive Therapy); 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 GZB4ZZZ?
Under the General Equivalence Mappings, Other Electroconvulsive Therapy crosswalks to ICD-9-PCS 94.27 (Other electroshock therapy). The mapping is approximate, so confirm it fits the documentation.
