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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 00XJ includes procedures performed to transfer neural tissue in the trochlear nerve. These ICD-10-PCS codes are used for inpatient documentation when a portion or all of the trochlear nerve is moved to assume the function of another nerve or neural structure. Accurate coding within the ICD-10-PCS 00XJ group is essential for proper inpatient reimbursement, as it captures the procedure performed and determines appropriate case mix and payment.

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Trochlear Nerve Transfer Procedure Overview

Procedures in this group involve transferring all or a portion of the trochlear nerve to another location to take over the function of a different nerve or neural structure. These procedures target the central nervous system and cranial nerves and are used when rerouting neural function is required to restore ocular motor control. Accurate ICD-10-PCS coding matters for inpatient reimbursement because it documents the specific neural transfer performed and supports appropriate case mix assignment and payment.

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
J	Body Part	Trochlear Nerve

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

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Trochlear 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
J	Body Part	Trochlear Nerve

When to Use

Use a code from this group when an operative transfer of the trochlear nerve is performed to restore or replace neural function. Do not use these codes for procedures that do not involve relocating trochlear nerve tissue.

ICD-10-PCS Codes

24 rows

ICD-10-PCS Code	Description
00XJ0ZF	Transfer Trochlear Nerve to Olfactory Nerve, Open Approach
00XJ0ZG	Transfer Trochlear Nerve to Optic Nerve, Open Approach
00XJ0ZH	Transfer Trochlear Nerve to Oculomotor Nerve, Open Approach
00XJ0ZJ	Transfer Trochlear Nerve to Trochlear Nerve, Open Approach
00XJ0ZK	Transfer Trochlear Nerve to Trigeminal Nerve, Open Approach
00XJ0ZL	Transfer Trochlear Nerve to Abducens Nerve, Open Approach
00XJ0ZM	Transfer Trochlear Nerve to Facial Nerve, Open Approach
00XJ0ZN	Transfer Trochlear Nerve to Acoustic Nerve, Open Approach
00XJ0ZP	Transfer Trochlear Nerve to Glossopharyngeal Nerve, Open Approach
00XJ0ZQ	Transfer Trochlear 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 young adult with traumatic fourth cranial nerve avulsion after a high-speed motor vehicle collision presents with vertical diplopia and superior oblique palsy; imaging demonstrates discontinuity of the trochlear nerve and intact adjacent cranial nerves, and the patient is taken to the inpatient operating room for neural transfer to restore ocular motor function. A trochlear nerve transfer to the oculomotor or abducens nerve may be performed to reanimate the affected extraocular muscles. Typical codes: 00XJ0ZH, 00XJ0ZL
An elective reconstructive procedure in a middle-aged patient with long-standing isolated trochlear nerve palsy from prior tumor resection causes debilitating vertical diplopia and head tilt despite conservative therapy; in a planned inpatient surgery the trochlear nerve is mobilized and transferred to an ipsilateral or contralateral trochlear or oculomotor nerve segment to reestablish function. This restorative transfer is performed to improve ocular alignment and reduce symptomatic diplopia. Typical codes: 00XJ0ZJ, 00XJ0ZH
A patient with prior failed nerve grafting for facial reanimation develops progressive denervation of extraocular muscles after radiation-induced injury to the trochlear nerve; during an urgent inpatient revision the surgeon transfers residual trochlear nerve fibers to the abducens or facial nerve to salvage motor function and limit further functional loss. The procedure is coded as a transfer reflecting relocation of trochlear nerve tissue to assume another cranial nerve's function. Typical codes: 00XJ0ZL, 00XJ0ZM

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

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

00XM-FACIAL-NERVE-MOVING-FACIAL-NERVE-TRANSFER

ICD-10-PCS Code For Facial 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
00XJ0ZF	Transfer Trochlear Nerve to Olfactory Nerve, Open Approach
00XJ0ZG	Transfer Trochlear Nerve to Optic Nerve, Open Approach
00XJ0ZH	Transfer Trochlear Nerve to Oculomotor Nerve, Open Approach
00XJ0ZJ	Transfer Trochlear Nerve to Trochlear Nerve, Open Approach
00XJ0ZK	Transfer Trochlear Nerve to Trigeminal Nerve, Open Approach
00XJ0ZL	Transfer Trochlear Nerve to Abducens Nerve, Open Approach
00XJ0ZM	Transfer Trochlear Nerve to Facial Nerve, Open Approach
00XJ0ZN	Transfer Trochlear Nerve to Acoustic Nerve, Open Approach
00XJ0ZP	Transfer Trochlear Nerve to Glossopharyngeal Nerve, Open Approach
00XJ0ZQ	Transfer Trochlear 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 young adult with traumatic fourth cranial nerve avulsion after a high-speed motor vehicle collision presents with vertical diplopia and superior oblique palsy; imaging demonstrates discontinuity of the trochlear nerve and intact adjacent cranial nerves, and the patient is taken to the inpatient operating room for neural transfer to restore ocular motor function. A trochlear nerve transfer to the oculomotor or abducens nerve may be performed to reanimate the affected extraocular muscles. Typical codes: 00XJ0ZH, 00XJ0ZL
An elective reconstructive procedure in a middle-aged patient with long-standing isolated trochlear nerve palsy from prior tumor resection causes debilitating vertical diplopia and head tilt despite conservative therapy; in a planned inpatient surgery the trochlear nerve is mobilized and transferred to an ipsilateral or contralateral trochlear or oculomotor nerve segment to reestablish function. This restorative transfer is performed to improve ocular alignment and reduce symptomatic diplopia. Typical codes: 00XJ0ZJ, 00XJ0ZH
A patient with prior failed nerve grafting for facial reanimation develops progressive denervation of extraocular muscles after radiation-induced injury to the trochlear nerve; during an urgent inpatient revision the surgeon transfers residual trochlear nerve fibers to the abducens or facial nerve to salvage motor function and limit further functional loss. The procedure is coded as a transfer reflecting relocation of trochlear nerve tissue to assume another cranial nerve's function. Typical codes: 00XJ0ZL, 00XJ0ZM

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

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

00XM-FACIAL-NERVE-MOVING-FACIAL-NERVE-TRANSFER

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

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

Trochlear Nerve Transfer Procedure Overview

Code Attributes

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

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

Trochlear 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 operation describe trochlear nerve transfer procedures?

How are individual procedures in the 00XJ code group differentiated?

What inpatient reimbursement relevance do 00XJ codes have?

Which DRG groups are related to procedures coded in 00XJ?

Do the 00XJ codes indicate whether the entire trochlear nerve or a portion is transferred?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS section and operation describe trochlear nerve transfer procedures?

How are individual procedures in the 00XJ code group differentiated?

What inpatient reimbursement relevance do 00XJ codes have?

Which DRG groups are related to procedures coded in 00XJ?

Do the 00XJ codes indicate whether the entire trochlear nerve or a portion is transferred?

References