GZGZZZZ is a billable ICD-10-PCS procedure code for Narcosynthesis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Narcosynthesis involves administration of intravenous barbiturates in order to release suppressed or repressed thoughts. 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 |
Clinical Classification (CCSR)
AHRQ groups GZGZZZZ into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for GZGZZZZ under the General Equivalence Mappings.
Similar Procedure Codes
Questions About GZGZZZZ
Is GZGZZZZ a billable code?
Yes. GZGZZZZ is a complete seven-character ICD-10-PCS code, specific enough to report Narcosynthesis on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in GZGZZZZ mean?
GZGZZZZ 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. The mapping is approximate, so confirm it fits the documentation.
