ICD-10-PCS Code For Peripheral Nervous: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 4A11 includes procedures performed to monitor peripheral nervous system function repetitively over a period of time in peripheral nervous locations. These ICD-10-PCS codes are used for inpatient documentation when continuous or repeated physiologic assessment of peripheral nerve function is required to guide care or detect deterioration. Accurate coding within the ICD-10-PCS 4A11 group is essential for proper inpatient reimbursement, as it captures the specific monitoring performed and supports clinical documentation accuracy.

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Peripheral Nervous Monitoring Procedure Overview

Procedures in this group involve repetitive measurement and monitoring of peripheral nervous system function over time to assess physiological status and detect changes. They target the physiological systems body system with a focus on peripheral nervous structures such as peripheral nerves and related pathways. Accurate coding matters for inpatient reimbursement because it documents the monitoring performed and supports appropriate case mix grouping and payment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
4	Section	Measurement and Monitoring
A	Body System	Physiological Systems
1	Operation	Monitoring
1	Body Part	Peripheral Nervous

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ICD-10-PCS Code For Peripheral Nervous: Procedure Code Group Overview

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Peripheral Nervous Monitoring Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
4	Section	Measurement and Monitoring
A	Body System	Physiological Systems
1	Operation	Monitoring
1	Body Part	Peripheral Nervous

When to Use

Use a code from this group when a patient requires repeated or continuous assessment of peripheral nervous system function to inform treatment decisions or detect changes. This applies when documented monitoring of peripheral nerves or related physiologic parameters is performed and recorded in the inpatient medical record.

ICD-10-PCS Codes

20 rows

ICD-10-PCS Code	Description
4A11029	Monitoring of Peripheral Nervous Conductivity, Sensory, Open Approach
4A1102B	Monitoring of Peripheral Nervous Conductivity, Motor, Open Approach
4A1104G	Monitoring of Peripheral Nervous Electrical Activity, Intraoperative, Open Approach
4A1104Z	Monitoring of Peripheral Nervous Electrical Activity, Open Approach
4A11329	Monitoring of Peripheral Nervous Conductivity, Sensory, Percutaneous Approach
4A1132B	Monitoring of Peripheral Nervous Conductivity, Motor, Percutaneous Approach
4A1134G	Monitoring of Peripheral Nervous Electrical Activity, Intraoperative, Percutaneous Approach
4A1134Z	Monitoring of Peripheral Nervous Electrical Activity, Percutaneous Approach
4A11729	Monitoring of Peripheral Nervous Conductivity, Sensory, Via Natural or Artificial Opening
4A1172B	Monitoring of Peripheral Nervous Conductivity, Motor, Via Natural or Artificial Opening

Showing 1–10 of 20

Typical Clinical Scenarios

An adult patient is admitted urgently after a traumatic laceration to the forearm with acute loss of distal sensory function and concern for peripheral nerve injury. Repetitive sensory nerve conduction monitoring is performed at the bedside and in the operating room to assess ongoing peripheral sensory conductivity and to guide urgent surgical repair decisions and postoperative surveillance. Continuous or repeated measurements document changes in sensory nerve function during the initial inpatient period. Typical codes: 4A11029, 4A11329
A patient scheduled for elective peripheral nerve decompression for carpal tunnel syndrome is admitted for planned surgery. Intraoperative monitoring of peripheral nerve electrical activity is used throughout the procedure to map nerve function and minimize iatrogenic injury, with repeated recordings taken before, during, and after decompression to document baseline and post-decompression nerve activity. Typical codes: 4A1104G, 4A1134G
A postoperative patient develops progressive motor weakness in a limb several days after peripheral nerve grafting and requires return to the operating room for evaluation. Repetitive motor nerve conductivity monitoring is performed percutaneously and intraoperatively to determine the extent of conduction failure and to guide revision surgery or targeted interventions during the inpatient stay. Typical codes: 4A1132B, 4A1172B

Related Codes

4A10-CENTRAL-NERVOUS-MONITORING

ICD-10-PCS Code For Central Nervous: Procedure Code Group Overview

4A12-CARDIAC-MONITORING

ICD-10-PCS Code For Cardiac: Procedure Code Group Overview

4A13-ARTERIAL-MONITORING

ICD-10-PCS Code For Arterial: Procedure Code Group Overview

4A14-VENOUS-MONITORING

ICD-10-PCS Code For Venous: Procedure Code Group Overview

4A16-LYMPHATIC-MONITORING

ICD-10-PCS Code For Lymphatic: Procedure Code Group Overview

4A19-RESPIRATORY-MONITORING

ICD-10-PCS Code For Respiratory: Procedure Code Group Overview

4A1B-GASTROINTESTINAL-MONITORING

ICD-10-PCS Code For Gastrointestinal: Procedure Code Group Overview

4A1D-URINARY-MONITORING

ICD-10-PCS Code For Urinary: Procedure Code Group Overview

4A1G-SKIN-AND-BREAST-MONITORING

ICD-10-PCS Code For Skin And Breast: Procedure Code Group Overview

4A1H-PRODUCTS-OF-CONCEPTION-MONITORING

ICD-10-PCS Code For Products Of Conception: Procedure Code Group Overview

Showing 1–10 of 12

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

20 rows

ICD-10-PCS Code	Description
4A11029	Monitoring of Peripheral Nervous Conductivity, Sensory, Open Approach
4A1102B	Monitoring of Peripheral Nervous Conductivity, Motor, Open Approach
4A1104G	Monitoring of Peripheral Nervous Electrical Activity, Intraoperative, Open Approach
4A1104Z	Monitoring of Peripheral Nervous Electrical Activity, Open Approach
4A11329	Monitoring of Peripheral Nervous Conductivity, Sensory, Percutaneous Approach
4A1132B	Monitoring of Peripheral Nervous Conductivity, Motor, Percutaneous Approach
4A1134G	Monitoring of Peripheral Nervous Electrical Activity, Intraoperative, Percutaneous Approach
4A1134Z	Monitoring of Peripheral Nervous Electrical Activity, Percutaneous Approach
4A11729	Monitoring of Peripheral Nervous Conductivity, Sensory, Via Natural or Artificial Opening
4A1172B	Monitoring of Peripheral Nervous Conductivity, Motor, Via Natural or Artificial Opening

Showing 1–10 of 20

Typical Clinical Scenarios

An adult patient is admitted urgently after a traumatic laceration to the forearm with acute loss of distal sensory function and concern for peripheral nerve injury. Repetitive sensory nerve conduction monitoring is performed at the bedside and in the operating room to assess ongoing peripheral sensory conductivity and to guide urgent surgical repair decisions and postoperative surveillance. Continuous or repeated measurements document changes in sensory nerve function during the initial inpatient period. Typical codes: 4A11029, 4A11329
A patient scheduled for elective peripheral nerve decompression for carpal tunnel syndrome is admitted for planned surgery. Intraoperative monitoring of peripheral nerve electrical activity is used throughout the procedure to map nerve function and minimize iatrogenic injury, with repeated recordings taken before, during, and after decompression to document baseline and post-decompression nerve activity. Typical codes: 4A1104G, 4A1134G
A postoperative patient develops progressive motor weakness in a limb several days after peripheral nerve grafting and requires return to the operating room for evaluation. Repetitive motor nerve conductivity monitoring is performed percutaneously and intraoperatively to determine the extent of conduction failure and to guide revision surgery or targeted interventions during the inpatient stay. Typical codes: 4A1132B, 4A1172B

Related Codes

4A10-CENTRAL-NERVOUS-MONITORING

ICD-10-PCS Code For Central Nervous: Procedure Code Group Overview

4A12-CARDIAC-MONITORING

ICD-10-PCS Code For Cardiac: Procedure Code Group Overview

4A13-ARTERIAL-MONITORING

ICD-10-PCS Code For Arterial: Procedure Code Group Overview

4A14-VENOUS-MONITORING

ICD-10-PCS Code For Venous: Procedure Code Group Overview

4A16-LYMPHATIC-MONITORING

ICD-10-PCS Code For Lymphatic: Procedure Code Group Overview

4A19-RESPIRATORY-MONITORING

ICD-10-PCS Code For Respiratory: Procedure Code Group Overview

4A1B-GASTROINTESTINAL-MONITORING

ICD-10-PCS Code For Gastrointestinal: Procedure Code Group Overview

4A1D-URINARY-MONITORING

ICD-10-PCS Code For Urinary: Procedure Code Group Overview

4A1G-SKIN-AND-BREAST-MONITORING

ICD-10-PCS Code For Skin And Breast: Procedure Code Group Overview

4A1H-PRODUCTS-OF-CONCEPTION-MONITORING

ICD-10-PCS Code For Products Of Conception: Procedure Code Group Overview

Showing 1–10 of 12

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 Peripheral Nervous: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Peripheral Nervous: Procedure Code Group Overview policy alerts

Peripheral Nervous Monitoring Procedure Overview

Code Attributes

ICD-10-PCS Code For Peripheral Nervous: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Peripheral Nervous: Procedure Code Group Overview policy alerts

Peripheral Nervous Monitoring Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What does ICD-10-PCS code group 4A11 represent?

Which body system and operation are indicated by the code attributes for 4A11?

How are approach types represented within the 4A11 code group?

What specific monitoring modalities are captured in the 4A11 codes?

Why is accurate coding within ICD-10-PCS 4A11 important for inpatient reimbursement?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

What does ICD-10-PCS code group 4A11 represent?

Which body system and operation are indicated by the code attributes for 4A11?

How are approach types represented within the 4A11 code group?

What specific monitoring modalities are captured in the 4A11 codes?

Why is accurate coding within ICD-10-PCS 4A11 important for inpatient reimbursement?

References