ICD-10-PCS Code For Lower Arm And Wrist Muscle: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0KX9 includes procedures performed to transfer muscles in the lower arm and wrist on the right side. These ICD-10-PCS codes are used for inpatient documentation when a muscle or portion of a muscle is moved to a new location to assume the function of another muscle or muscle portion. Accurate coding within the ICD-10-PCS 0KX9 group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Lower Arm And Wrist Muscle Transfer Procedure Overview

This procedure group includes transfer operations performed on muscles of the lower arm and wrist on the right side, targeting the Muscles body system. These procedures move all or a portion of a muscle to another location to take over the function of another muscle or muscle portion. Accurate coding of these transfers is important for inpatient reimbursement because it documents the specific root operation and anatomical site, which affects case mix and payment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
K	Body System	Muscles
X	Operation	Transfer
9	Body Part	Lower Arm and Wrist Muscle, Right

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ICD-10-PCS Code For Lower Arm And Wrist Muscle: Procedure Code Group Overview

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Lower Arm And Wrist Muscle Transfer Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
K	Body System	Muscles
X	Operation	Transfer
9	Body Part	Lower Arm and Wrist Muscle, Right

When to Use

Use a code from this group when a surgical transfer is performed on a right lower arm or wrist muscle to restore or reassign function to a different muscle or muscle segment. These codes apply when the procedure moves muscle tissue without removing it, for the purpose of replacing or augmenting functional capacity.

ICD-10-PCS Codes

8 rows

ICD-10-PCS Code	Description
0KX90Z0	Transfer Right Lower Arm and Wrist Muscle with Skin, Open Approach
0KX90Z1	Transfer Right Lower Arm and Wrist Muscle with Subcutaneous Tissue, Open Approach
0KX90Z2	Transfer Right Lower Arm and Wrist Muscle with Skin and Subcutaneous Tissue, Open Approach
0KX90ZZ	Transfer Right Lower Arm and Wrist Muscle, Open Approach
0KX94Z0	Transfer Right Lower Arm and Wrist Muscle with Skin, Percutaneous Endoscopic Approach
0KX94Z1	Transfer Right Lower Arm and Wrist Muscle with Subcutaneous Tissue, Percutaneous Endoscopic Approach
0KX94Z2	Transfer Right Lower Arm and Wrist Muscle with Skin and Subcutaneous Tissue, Percutaneous Endoscopic Approach
0KX94ZZ	Transfer Right Lower Arm and Wrist Muscle, Percutaneous Endoscopic Approach

DRG Codes

6 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
500	Soft Tissue Procedures with MCC
501	Soft Tissue Procedures with CC
502	Soft Tissue Procedures without CC/MCC

Typical Clinical Scenarios

A middle-aged manual laborer presents electively for reconstruction after a chronic radial nerve palsy with wrist drop and persistent inability to extend the wrist despite months of therapy; inpatient surgery is scheduled to reassign redundant forearm muscle tissue to restore wrist extension and improve hand function. A transfer of a portion of a right lower arm/wrist muscle is performed to take over the lost function. Typical codes: 0KX90ZZ, 0KX90Z2
An elderly patient is admitted urgently after a traumatic laceration to the right distal forearm with loss of specific muscle function despite initial repair; once soft-tissue viability is assessed, a muscle transfer is done to reestablish critical wrist or finger extension to enable rehabilitation and prevent long-term disability. The procedure moves muscle tissue within the right lower arm/wrist to assume the damaged muscle’s function. Typical codes: 0KX94ZZ, 0KX94Z0
A patient with a prior right forearm reconstructive procedure develops adhesion-related loss of function and requires a revision transfer to reposition muscle and improve tendon excursion; the inpatient revision involves moving muscle tissue with partial skin/subcutaneous reconstruction to restore mechanical advantage. Typical codes: 0KX90Z1, 0KX90Z2

Related Codes

0KX0-HEAD-TRANSFER

ICD-10-PCS Code For Head Muscle: Procedure Code Group Overview

0KX1-FACIAL-MUSCLE-TRANSFER

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

0KX2-NECK-MUSCLE-TRANSFER

ICD-10-PCS Code For Neck Muscle, Right: Procedure Code Group Overview

0KX3-NECK-MUSCLE-LEFT-TRANSFER

ICD-10-PCS Code For Neck Muscle, Left: Procedure Code Group Overview

0KX4-TONGUE-PALATE-PHARYNX-TRANSFER

ICD-10-PCS Code For Tongue Palate Pharynx Muscle: Procedure Code Group Overview

0KX5-RIGHT-SHOULDER-MOVING-SHOULDER-MUSCLE-TRANSFER

ICD-10-PCS Code For Shoulder Muscle, Right: Procedure Code Group Overview

0KX6-LEFT-SHOULDER-MUSCLE-TRANSFER

ICD-10-PCS Code For Left Shoulder Muscle: Procedure Code Group Overview

0KX7-UPPER-ARM-MUSCLE-TRANSFER

ICD-10-PCS Code For Upper Arm Muscle Right: Procedure Code Group Overview

0KX8-UPPER-ARM-MUSCLE-LEFT-TRANSFER

ICD-10-PCS Code For Upper Arm Muscle Left: Procedure Code Group Overview

0KXB-LEFT-LOWER-ARM-TRANSFER

ICD-10-PCS Code For Lower Arm And Wrist Muscle Left: Procedure Code Group Overview

Showing 1–10 of 27

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

8 rows

ICD-10-PCS Code	Description
0KX90Z0	Transfer Right Lower Arm and Wrist Muscle with Skin, Open Approach
0KX90Z1	Transfer Right Lower Arm and Wrist Muscle with Subcutaneous Tissue, Open Approach
0KX90Z2	Transfer Right Lower Arm and Wrist Muscle with Skin and Subcutaneous Tissue, Open Approach
0KX90ZZ	Transfer Right Lower Arm and Wrist Muscle, Open Approach
0KX94Z0	Transfer Right Lower Arm and Wrist Muscle with Skin, Percutaneous Endoscopic Approach
0KX94Z1	Transfer Right Lower Arm and Wrist Muscle with Subcutaneous Tissue, Percutaneous Endoscopic Approach
0KX94Z2	Transfer Right Lower Arm and Wrist Muscle with Skin and Subcutaneous Tissue, Percutaneous Endoscopic Approach
0KX94ZZ	Transfer Right Lower Arm and Wrist Muscle, Percutaneous Endoscopic Approach

DRG Codes

6 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
500	Soft Tissue Procedures with MCC
501	Soft Tissue Procedures with CC
502	Soft Tissue Procedures without CC/MCC

Typical Clinical Scenarios

A middle-aged manual laborer presents electively for reconstruction after a chronic radial nerve palsy with wrist drop and persistent inability to extend the wrist despite months of therapy; inpatient surgery is scheduled to reassign redundant forearm muscle tissue to restore wrist extension and improve hand function. A transfer of a portion of a right lower arm/wrist muscle is performed to take over the lost function. Typical codes: 0KX90ZZ, 0KX90Z2
An elderly patient is admitted urgently after a traumatic laceration to the right distal forearm with loss of specific muscle function despite initial repair; once soft-tissue viability is assessed, a muscle transfer is done to reestablish critical wrist or finger extension to enable rehabilitation and prevent long-term disability. The procedure moves muscle tissue within the right lower arm/wrist to assume the damaged muscle’s function. Typical codes: 0KX94ZZ, 0KX94Z0
A patient with a prior right forearm reconstructive procedure develops adhesion-related loss of function and requires a revision transfer to reposition muscle and improve tendon excursion; the inpatient revision involves moving muscle tissue with partial skin/subcutaneous reconstruction to restore mechanical advantage. Typical codes: 0KX90Z1, 0KX90Z2

Related Codes

0KX0-HEAD-TRANSFER

ICD-10-PCS Code For Head Muscle: Procedure Code Group Overview

0KX1-FACIAL-MUSCLE-TRANSFER

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

0KX2-NECK-MUSCLE-TRANSFER

ICD-10-PCS Code For Neck Muscle, Right: Procedure Code Group Overview

0KX3-NECK-MUSCLE-LEFT-TRANSFER

ICD-10-PCS Code For Neck Muscle, Left: Procedure Code Group Overview

0KX4-TONGUE-PALATE-PHARYNX-TRANSFER

ICD-10-PCS Code For Tongue Palate Pharynx Muscle: Procedure Code Group Overview

0KX5-RIGHT-SHOULDER-MOVING-SHOULDER-MUSCLE-TRANSFER

ICD-10-PCS Code For Shoulder Muscle, Right: Procedure Code Group Overview

0KX6-LEFT-SHOULDER-MUSCLE-TRANSFER

ICD-10-PCS Code For Left Shoulder Muscle: Procedure Code Group Overview

0KX7-UPPER-ARM-MUSCLE-TRANSFER

ICD-10-PCS Code For Upper Arm Muscle Right: Procedure Code Group Overview

0KX8-UPPER-ARM-MUSCLE-LEFT-TRANSFER

ICD-10-PCS Code For Upper Arm Muscle Left: Procedure Code Group Overview

0KXB-LEFT-LOWER-ARM-TRANSFER

ICD-10-PCS Code For Lower Arm And Wrist Muscle Left: Procedure Code Group Overview

Showing 1–10 of 27

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 Lower Arm And Wrist Muscle: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Lower Arm And Wrist Muscle: Procedure Code Group Overview policy alerts

Lower Arm And Wrist Muscle Transfer Procedure Overview

Code Attributes

ICD-10-PCS Code For Lower Arm And Wrist Muscle: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Lower Arm And Wrist Muscle: Procedure Code Group Overview policy alerts

Lower Arm And Wrist Muscle Transfer 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 0KX9?

What is the root operation and body system for codes in 0KX9?

How do approach values differ within the 0KX9 code group?

Which code options indicate inclusion of skin or subcutaneous tissue?

What DRG categories may be relevant for inpatient cases coded to 0KX9 procedures?

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 0KX9?

What is the root operation and body system for codes in 0KX9?

How do approach values differ within the 0KX9 code group?

Which code options indicate inclusion of skin or subcutaneous tissue?

What DRG categories may be relevant for inpatient cases coded to 0KX9 procedures?

References