ICD-10-PCS Code for Narcosynthesis: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group GZGZ includes procedures performed to administer therapeutic narcosynthesis in inpatient mental health care. These ICD-10-PCS codes are used for inpatient documentation when barbiturate or similar agents are administered to facilitate release of suppressed or repressed thoughts under medical supervision. Accurate coding within the ICD-10-PCS GZGZ group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Narcosynthesis Procedure Overview

Procedures in this group involve administration techniques used to elicit suppressed or repressed thoughts through medically supervised narcosynthesis for mental health treatment. These procedures do not target a specific anatomical body system but are focused on the therapeutic administration process and associated monitoring. Accurate coding matters for inpatient reimbursement because it documents the mental health treatment provided and supports appropriate case mix assignment and payment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
G	Section	Mental Health
Z	Body System	None
G	Operation	Narcosynthesis
Z	Body Part	None

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ICD-10-PCS Code for Narcosynthesis: Procedure Code Group Overview

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Narcosynthesis Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
G	Section	Mental Health
Z	Body System	None
G	Operation	Narcosynthesis
Z	Body Part	None

When to Use

Use a code from this group when narcosynthesis is performed as a distinct inpatient therapeutic intervention involving administration of agents for mental health treatment. Do not use these codes for unrelated medication administration or outpatient psychotherapeutic services.

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
GZGZZZZ	Narcosynthesis

Typical Clinical Scenarios

A middle-aged patient admitted to the inpatient psychiatric unit after a suicide attempt with severe dissociative amnesia who is unable to recall traumatic events; the treatment team recommends medically supervised narcosynthesis to facilitate recovery of suppressed memories as part of intensive diagnostic and therapeutic workup, with continuous monitoring in the hospital setting. Typical codes: GZGZZZZ
An elderly patient with chronic, treatment-resistant post-traumatic stress symptoms is electively admitted for a planned course of narcosynthesis under close inpatient supervision when less invasive psychotherapies and medication adjustments have failed to elicit recall or therapeutic progress; the procedure is performed to help access repressed material to guide further psychotherapy. Typical codes: GZGZZZZ
An adult patient hospitalized for acute psychiatric decompensation with severe psychogenic fugue and persistent inability to integrate traumatic memories after outpatient attempts; as part of emergency inpatient stabilization and diagnostic clarification, clinicians perform narcosynthesis to attempt controlled retrieval of suppressed thoughts to inform immediate treatment planning. Typical codes: GZGZZZZ

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-PCS Codes

1 rows

ICD-10-PCS Code	Description
GZGZZZZ	Narcosynthesis

Typical Clinical Scenarios

A middle-aged patient admitted to the inpatient psychiatric unit after a suicide attempt with severe dissociative amnesia who is unable to recall traumatic events; the treatment team recommends medically supervised narcosynthesis to facilitate recovery of suppressed memories as part of intensive diagnostic and therapeutic workup, with continuous monitoring in the hospital setting. Typical codes: GZGZZZZ
An elderly patient with chronic, treatment-resistant post-traumatic stress symptoms is electively admitted for a planned course of narcosynthesis under close inpatient supervision when less invasive psychotherapies and medication adjustments have failed to elicit recall or therapeutic progress; the procedure is performed to help access repressed material to guide further psychotherapy. Typical codes: GZGZZZZ
An adult patient hospitalized for acute psychiatric decompensation with severe psychogenic fugue and persistent inability to integrate traumatic memories after outpatient attempts; as part of emergency inpatient stabilization and diagnostic clarification, clinicians perform narcosynthesis to attempt controlled retrieval of suppressed thoughts to inform immediate treatment planning. Typical codes: GZGZZZZ

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-PCS Code for Narcosynthesis: Procedure Code Group Overview

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Narcosynthesis Procedure Overview

Code Attributes

ICD-10-PCS Code for Narcosynthesis: Procedure Code Group Overview

Sign up for ICD-10-PCS Code for Narcosynthesis: Procedure Code Group Overview policy alerts

Narcosynthesis Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Which ICD-10-PCS code represents narcosynthesis procedures in this group?

What types of procedures are included under the GZGZ code group?

In what clinical setting are GZGZ procedures coded in ICD-10-PCS?

What are the ICD-10-PCS code attributes for narcosynthesis in this group?

Why is accurate coding of `GZGZZZZ` important for reimbursement?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Which ICD-10-PCS code represents narcosynthesis procedures in this group?

What types of procedures are included under the GZGZ code group?

In what clinical setting are GZGZ procedures coded in ICD-10-PCS?

What are the ICD-10-PCS code attributes for narcosynthesis in this group?

Why is accurate coding of `GZGZZZZ` important for reimbursement?

References