ICD-10-PCS Code For Facial Nerve: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 00XM includes procedures performed to transfer nerves or nerve portions in the head and neck, specifically involving the facial nerve. These ICD-10-PCS codes are used for inpatient documentation when a portion or all of the facial nerve is moved to another location to take over the function of facial musculature. Accurate coding within the ICD-10-PCS 00XM group is essential for proper inpatient reimbursement, as it captures the specific transfer procedure performed and supports clinical documentation accuracy.

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Facial Nerve Transfer Procedure Overview

Procedures in this group involve transferring all or a portion of the facial nerve to another location to restore or assume the function of facial musculature. These interventions target the central nervous system and cranial nerves and are coded in the inpatient setting using the International Classification of Diseases, Tenth Revision, Procedure Coding System. Accurate coding of facial nerve transfer procedures is important for documenting the operative course and ensuring correct inpatient reimbursement and case mix assignment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
0	Body System	Central Nervous System and Cranial Nerves
X	Operation	Transfer
M	Body Part	Facial Nerve

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ICD-10-PCS Code For Facial Nerve: Procedure Code Group Overview

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Facial Nerve Transfer Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
0	Body System	Central Nervous System and Cranial Nerves
X	Operation	Transfer
M	Body Part	Facial Nerve

When to Use

Use a code from this group when the surgical procedure moves facial nerve tissue to a different location to reanimate or substitute for impaired facial musculature. Do not use these codes for simple repair or grafting procedures that do not involve transfer as the primary root operation.

ICD-10-PCS Codes

24 rows

ICD-10-PCS Code	Description
00XM0ZF	Transfer Facial Nerve to Olfactory Nerve, Open Approach
00XM0ZG	Transfer Facial Nerve to Optic Nerve, Open Approach
00XM0ZH	Transfer Facial Nerve to Oculomotor Nerve, Open Approach
00XM0ZJ	Transfer Facial Nerve to Trochlear Nerve, Open Approach
00XM0ZK	Transfer Facial Nerve to Trigeminal Nerve, Open Approach
00XM0ZL	Transfer Facial Nerve to Abducens Nerve, Open Approach
00XM0ZM	Transfer Facial Nerve to Facial Nerve, Open Approach
00XM0ZN	Transfer Facial Nerve to Acoustic Nerve, Open Approach
00XM0ZP	Transfer Facial Nerve to Glossopharyngeal Nerve, Open Approach
00XM0ZQ	Transfer Facial Nerve to Vagus Nerve, Open Approach

Showing 1–10 of 24

DRG Codes

9 rows

DRG Code	Description
040	Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC
041	Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator
042	Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC
907	Other O.R. Procedures for Injuries with MCC
908	Other O.R. Procedures for Injuries with CC
909	Other O.R. Procedures for Injuries without CC/MCC
957	Other O.R. Procedures for Multiple Significant Trauma with MCC
958	Other O.R. Procedures for Multiple Significant Trauma with CC
959	Other O.R. Procedures for Multiple Significant Trauma without CC/MCC

Typical Clinical Scenarios

A middle-aged patient presents after a traumatic skull base injury with immediate unilateral facial paralysis and no viable distal facial nerve stumps; inpatient surgical planning aims to reanimate the paralyzed facial musculature by redirecting a functioning cranial nerve to assume facial nerve function during the same admission. An open transfer is chosen when direct visualization and mobilization of donor and recipient nerves are required in a complex traumatic field. Typical codes: 00XM0ZS, 00XM0ZQ
An adult with long-standing facial palsy from acoustic neuroma resection experiences progressive loss of smile and eye closure despite prior conservative measures; during a planned inpatient reconstructive procedure, a percutaneous endoscopic transfer is performed to connect a spared cranial nerve to the facial nerve to restore motor input. This elective admission is for operative nerve transfer and postoperative monitoring. Typical codes: 00XM4ZR, 00XM4ZM
A patient with failed prior facial nerve repair develops synkinesis and persistent weakness; inpatient revision surgery is undertaken to relocate a portion of a donor cranial nerve to a different segment of the facial nerve to improve selective reinnervation. Because scarred tissue planes require an open approach for precise dissection and transfer, an open transfer code is appropriate. Typical codes: 00XM0ZL, 00XM0ZM

Related Codes

00XF-OLFACTORY-NERVE-TRANSFER

ICD-10-PCS Code for Olfactory Nerve: Procedure Code Group Overview

00XG-OPTIC-NERVE-TRANSFER

ICD-10-PCS Code For Optic Nerve: Procedure Code Group Overview

00XH-OCULOMOTOR-NERVE-TRANSFER

ICD-10-PCS Code For Oculomotor Nerve: Procedure Code Group Overview

00XJ-TROCHLEAR-NERVE-TRANSFER

ICD-10-PCS Code For Trochlear Nerve: Procedure Code Group Overview

00XK-TRIGEMINAL-NERVE-TRANSFER

ICD-10-PCS Code For Trigeminal Nerve: Procedure Code Group Overview

00XL-ABDUCENS-NERVE-TRANSFER

ICD-10-PCS Code For Abducens Nerve: Procedure Code Group Overview

00XN-ACOUSTIC-NERVE-TRANSFER

ICD-10-PCS Code For Acoustic Nerve: Procedure Code Group Overview

00XP-GLOSSOPHARYNGEAL-NERVE-TRANSFER

ICD-10-PCS Code For Glossopharyngeal Nerve: Procedure Code Group Overview

00XQ-VAGUS-NERVE-TRANSFER

ICD-10-PCS Code For Vagus Nerve: Procedure Code Group Overview

00XR-ACCESSORY-NERVE-TRANSFER

ICD-10-PCS Code For Accessory Nerve: Procedure Code Group Overview

Showing 1–10 of 11

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

24 rows

ICD-10-PCS Code	Description
00XM0ZF	Transfer Facial Nerve to Olfactory Nerve, Open Approach
00XM0ZG	Transfer Facial Nerve to Optic Nerve, Open Approach
00XM0ZH	Transfer Facial Nerve to Oculomotor Nerve, Open Approach
00XM0ZJ	Transfer Facial Nerve to Trochlear Nerve, Open Approach
00XM0ZK	Transfer Facial Nerve to Trigeminal Nerve, Open Approach
00XM0ZL	Transfer Facial Nerve to Abducens Nerve, Open Approach
00XM0ZM	Transfer Facial Nerve to Facial Nerve, Open Approach
00XM0ZN	Transfer Facial Nerve to Acoustic Nerve, Open Approach
00XM0ZP	Transfer Facial Nerve to Glossopharyngeal Nerve, Open Approach
00XM0ZQ	Transfer Facial Nerve to Vagus Nerve, Open Approach

Showing 1–10 of 24

DRG Codes

9 rows

DRG Code	Description
040	Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC
041	Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator
042	Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC
907	Other O.R. Procedures for Injuries with MCC
908	Other O.R. Procedures for Injuries with CC
909	Other O.R. Procedures for Injuries without CC/MCC
957	Other O.R. Procedures for Multiple Significant Trauma with MCC
958	Other O.R. Procedures for Multiple Significant Trauma with CC
959	Other O.R. Procedures for Multiple Significant Trauma without CC/MCC

Typical Clinical Scenarios

A middle-aged patient presents after a traumatic skull base injury with immediate unilateral facial paralysis and no viable distal facial nerve stumps; inpatient surgical planning aims to reanimate the paralyzed facial musculature by redirecting a functioning cranial nerve to assume facial nerve function during the same admission. An open transfer is chosen when direct visualization and mobilization of donor and recipient nerves are required in a complex traumatic field. Typical codes: 00XM0ZS, 00XM0ZQ
An adult with long-standing facial palsy from acoustic neuroma resection experiences progressive loss of smile and eye closure despite prior conservative measures; during a planned inpatient reconstructive procedure, a percutaneous endoscopic transfer is performed to connect a spared cranial nerve to the facial nerve to restore motor input. This elective admission is for operative nerve transfer and postoperative monitoring. Typical codes: 00XM4ZR, 00XM4ZM
A patient with failed prior facial nerve repair develops synkinesis and persistent weakness; inpatient revision surgery is undertaken to relocate a portion of a donor cranial nerve to a different segment of the facial nerve to improve selective reinnervation. Because scarred tissue planes require an open approach for precise dissection and transfer, an open transfer code is appropriate. Typical codes: 00XM0ZL, 00XM0ZM

Related Codes

00XF-OLFACTORY-NERVE-TRANSFER

ICD-10-PCS Code for Olfactory Nerve: Procedure Code Group Overview

00XG-OPTIC-NERVE-TRANSFER

ICD-10-PCS Code For Optic Nerve: Procedure Code Group Overview

00XH-OCULOMOTOR-NERVE-TRANSFER

ICD-10-PCS Code For Oculomotor Nerve: Procedure Code Group Overview

00XJ-TROCHLEAR-NERVE-TRANSFER

ICD-10-PCS Code For Trochlear Nerve: Procedure Code Group Overview

00XK-TRIGEMINAL-NERVE-TRANSFER

ICD-10-PCS Code For Trigeminal Nerve: Procedure Code Group Overview

00XL-ABDUCENS-NERVE-TRANSFER

ICD-10-PCS Code For Abducens Nerve: Procedure Code Group Overview

00XN-ACOUSTIC-NERVE-TRANSFER

ICD-10-PCS Code For Acoustic Nerve: Procedure Code Group Overview

00XP-GLOSSOPHARYNGEAL-NERVE-TRANSFER

ICD-10-PCS Code For Glossopharyngeal Nerve: Procedure Code Group Overview

00XQ-VAGUS-NERVE-TRANSFER

ICD-10-PCS Code For Vagus Nerve: Procedure Code Group Overview

00XR-ACCESSORY-NERVE-TRANSFER

ICD-10-PCS Code For Accessory Nerve: Procedure Code Group Overview

Showing 1–10 of 11

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 Facial Nerve: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Facial Nerve: Procedure Code Group Overview policy alerts

Facial Nerve Transfer Procedure Overview

Code Attributes

ICD-10-PCS Code For Facial Nerve: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Facial Nerve: Procedure Code Group Overview policy alerts

Facial Nerve Transfer Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS section and body system cover facial nerve transfer procedures?

What is the general operation and body part specified for codes in the 00XM group?

Which approaches are represented among the listed ICD-10-PCS codes for facial nerve transfer?

How should coders select the correct code from the 00XM group?

Which DRG families may be related when a facial nerve transfer procedure from the 00XM group is coded?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS section and body system cover facial nerve transfer procedures?

What is the general operation and body part specified for codes in the 00XM group?

Which approaches are represented among the listed ICD-10-PCS codes for facial nerve transfer?

How should coders select the correct code from the 00XM group?

Which DRG families may be related when a facial nerve transfer procedure from the 00XM group is coded?

References