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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0184 includes procedures performed to divide nerve structures in the ulnar nerve. These ICD-10-PCS codes are used for inpatient documentation when a clinician intentionally transects the ulnar nerve for therapeutic, diagnostic, or preparatory reasons. Accurate coding within the ICD-10-PCS 0184 group is essential for proper inpatient reimbursement, as it captures the specific procedure performed and supports clinical documentation accuracy.

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Ulnar Nerve Division Procedure Overview

This procedure group includes division of the ulnar nerve, a peripheral nervous system structure, where the nerve is intentionally separated or transected. Procedures involve cutting into the nerve without draining fluids or gases to divide it for therapeutic or diagnostic purposes. Accurate ICD-10-PCS coding of these operations ensures inpatient records reflect the exact root operation and body part, which affects case mix assignment and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
1	Body System	Peripheral Nervous System
8	Operation	Division
4	Body Part	Ulnar Nerve

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

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Ulnar Nerve Division Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
1	Body System	Peripheral Nervous System
8	Operation	Division
4	Body Part	Ulnar Nerve

When to Use

Use a code from this group when the procedure performed is an intentional transection or separation of the ulnar nerve documented in the operative report. These codes apply when no draining of fluids or gases from the nerve is performed and the root operation is Division.

ICD-10-PCS Codes

3 rows

ICD-10-PCS Code	Description
01840ZZ	Division of Ulnar Nerve, Open Approach
01843ZZ	Division of Ulnar Nerve, Percutaneous Approach
01844ZZ	Division of Ulnar Nerve, Percutaneous Endoscopic Approach

DRG Codes

12 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
515	Other Musculoskeletal System and Connective Tissue O.R. Procedures with MCC
516	Other Musculoskeletal System and Connective Tissue O.R. Procedures with CC
517	Other Musculoskeletal System and Connective Tissue O.R. 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

Showing 1–10 of 12

Typical Clinical Scenarios

An elderly patient presents after a displaced closed distal humerus fracture with persistent severe neuropathic pain and a non-reconstructable ulnar nerve entrapment at the fracture site. After discussion and documentation that nerve repair or grafting is not feasible and that transection will reduce intractable pain and improve positioning for prosthetic management, the surgeon performs an open division of the ulnar nerve. The inpatient record documents intentional transection of the ulnar nerve via an open approach as part of the operative plan. Typical codes: 01840ZZ
A middle-aged worker experiences a jagged forearm laceration from industrial machinery with grossly transected ulnar nerve and contaminated soft tissues. During the emergent operative management to control contamination and debride devitalized tissue, the surgeon elects to perform a percutaneous division of the remaining ulnar nerve stump to permit later staged reconstruction and to manage severe neuroma pain in the acute setting. The procedure is documented as an intentional percutaneous division of the ulnar nerve. Typical codes: 01843ZZ
A patient with a previously treated cubital tunnel syndrome, who had recurrent debilitating neuropathic pain from an intractable neuroma after prior surgery, is admitted for a targeted minimally invasive endoscopic procedure to resect and divide the neuroma-containing segment of the ulnar nerve. The operative note records a percutaneous endoscopic division of the ulnar nerve segment to address failed prior interventions and control pain symptoms. Typical codes: 01844ZZ

Related Codes

0180-CERVICAL-PLEXUS-DIVISION

ICD-10-PCS Code For Cervical Plexus: Procedure Code Group Overview

0181-CERVICAL-NERVE-DIVISION

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

0182-PHRENIC-NERVE-DIVISION

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

0183-BRACHIAL-PLEXUS-DIVISION

ICD-10-PCS Code For Brachial Plexus: Procedure Code Group Overview

0185-MEDIAN-NERVE-DIVISION

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

0186-RADIAL-NERVE-DIVISION

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

0188-THORACIC-NERVE-DIVISION

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

0189-LUMBAR-PLEXUS-DIVISION

ICD-10-PCS Code For Lumbar Plexus: Procedure Code Group Overview

018A-LUMBOSACRAL-PLEXUS-DIVISION

ICD-10-PCS Code For Lumbosacral Plexus: Procedure Code Group Overview

018B-LUMBAR-NERVE-DIVISION

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

Showing 1–10 of 22

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

3 rows

ICD-10-PCS Code	Description
01840ZZ	Division of Ulnar Nerve, Open Approach
01843ZZ	Division of Ulnar Nerve, Percutaneous Approach
01844ZZ	Division of Ulnar Nerve, Percutaneous Endoscopic Approach

DRG Codes

12 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
515	Other Musculoskeletal System and Connective Tissue O.R. Procedures with MCC
516	Other Musculoskeletal System and Connective Tissue O.R. Procedures with CC
517	Other Musculoskeletal System and Connective Tissue O.R. 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

Showing 1–10 of 12

Typical Clinical Scenarios

An elderly patient presents after a displaced closed distal humerus fracture with persistent severe neuropathic pain and a non-reconstructable ulnar nerve entrapment at the fracture site. After discussion and documentation that nerve repair or grafting is not feasible and that transection will reduce intractable pain and improve positioning for prosthetic management, the surgeon performs an open division of the ulnar nerve. The inpatient record documents intentional transection of the ulnar nerve via an open approach as part of the operative plan. Typical codes: 01840ZZ
A middle-aged worker experiences a jagged forearm laceration from industrial machinery with grossly transected ulnar nerve and contaminated soft tissues. During the emergent operative management to control contamination and debride devitalized tissue, the surgeon elects to perform a percutaneous division of the remaining ulnar nerve stump to permit later staged reconstruction and to manage severe neuroma pain in the acute setting. The procedure is documented as an intentional percutaneous division of the ulnar nerve. Typical codes: 01843ZZ
A patient with a previously treated cubital tunnel syndrome, who had recurrent debilitating neuropathic pain from an intractable neuroma after prior surgery, is admitted for a targeted minimally invasive endoscopic procedure to resect and divide the neuroma-containing segment of the ulnar nerve. The operative note records a percutaneous endoscopic division of the ulnar nerve segment to address failed prior interventions and control pain symptoms. Typical codes: 01844ZZ

Related Codes

0180-CERVICAL-PLEXUS-DIVISION

ICD-10-PCS Code For Cervical Plexus: Procedure Code Group Overview

0181-CERVICAL-NERVE-DIVISION

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

0182-PHRENIC-NERVE-DIVISION

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

0183-BRACHIAL-PLEXUS-DIVISION

ICD-10-PCS Code For Brachial Plexus: Procedure Code Group Overview

0185-MEDIAN-NERVE-DIVISION

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

0186-RADIAL-NERVE-DIVISION

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

0188-THORACIC-NERVE-DIVISION

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

0189-LUMBAR-PLEXUS-DIVISION

ICD-10-PCS Code For Lumbar Plexus: Procedure Code Group Overview

018A-LUMBOSACRAL-PLEXUS-DIVISION

ICD-10-PCS Code For Lumbosacral Plexus: Procedure Code Group Overview

018B-LUMBAR-NERVE-DIVISION

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

Showing 1–10 of 22

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 Ulnar Nerve: Procedure Code Group Overview

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

Ulnar Nerve Division Procedure Overview

Code Attributes

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

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

Ulnar Nerve Division Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in ICD-10-PCS code group 0184?

What is the section, body system, and operation described for these codes?

When should a clinician use an 0184-series ICD-10-PCS code for documentation?

How does accurate coding within the 0184 group affect reimbursement?

Which DRG categories are related to procedures in the ulnar nerve division group?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in ICD-10-PCS code group 0184?

What is the section, body system, and operation described for these codes?

When should a clinician use an 0184-series ICD-10-PCS code for documentation?

How does accurate coding within the 0184 group affect reimbursement?

Which DRG categories are related to procedures in the ulnar nerve division group?

References