GZGZZZZ is a billable ICD-10-PCS procedure code for Narcosynthesis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). The root operation Narcosynthesis involves administration of intravenous barbiturates in order to release suppressed or repressed thoughts. The Alphabetic Index lists this code under Narcosynthesis. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Mental health procedures, NEC.
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 | G | Narcosynthesis |
| 4 | Qualifier | Z | None |
| 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 GZGZZZZ as Narcosynthesis. These index entries lead to this code:
To code narcosynthesis, open the FY 2027 ICD-10-PCS Alphabetic Index at Narcosynthesis. The entry lists GZGZZZZ 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 GZGZZZZ
Is GZGZZZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Narcosynthesis on inpatient claims from October 1, 2026 through September 30, 2027.
What is the ICD-10-PCS code for narcosynthesis?
The ICD-10-PCS Alphabetic Index lists Narcosynthesis under code GZGZZZZ, Narcosynthesis, billable on inpatient claims in fiscal year 2027.
What do the characters in GZGZZZZ 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 G is the Type (Narcosynthesis); the 4th character Z is the Qualifier (None); 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 GZGZZZZ?
Under the General Equivalence Mappings, Narcosynthesis crosswalks to ICD-9-PCS 94.21 (Narcoanalysis). The mapping is approximate, so confirm it fits the documentation.
