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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0KN8 includes procedures performed to release muscles in the left upper arm. These ICD-10-PCS codes are used for inpatient documentation when a clinician performs a surgical or mechanical release to free the left upper arm muscle from abnormal physical constraint such as contracture, scar tissue, or adhesions. Accurate coding within the ICD-10-PCS 0KN8 group is essential for proper inpatient reimbursement, as it captures the procedure performed and supports clinical documentation accuracy.

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Upper Arm Muscle Release Procedure Overview

This procedure group covers inpatient releases of the left upper arm muscle performed to free muscle tissue from abnormal physical constraints by cutting or force. These procedures target the muscular system of the left upper arm and restore mobility or relieve tension caused by contracture, scarring, or compressive bands. Accurate ICD-10-PCS coding of these releases is important for reflecting the clinical care provided and for appropriate inpatient reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
K	Body System	Muscles
N	Operation	Release
8	Body Part	Upper Arm Muscle, Left

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

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Upper Arm Muscle Release Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
K	Body System	Muscles
N	Operation	Release
8	Body Part	Upper Arm Muscle, Left

When to Use

Use codes from this group when a surgical or mechanical release is performed on the left upper arm muscle to relieve contracture, scar, or other restrictive tissue. Do not use this group for procedures on other body parts or for other operations such as repair or excision.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
0KN80ZZ	Release Left Upper Arm Muscle, Open Approach
0KN83ZZ	Release Left Upper Arm Muscle, Percutaneous Approach
0KN84ZZ	Release Left Upper Arm Muscle, Percutaneous Endoscopic Approach
0KN8XZZ	Release Left Upper Arm Muscle, External Approach

DRG Codes

3 rows

DRG Code	Description
500	Soft Tissue Procedures with MCC
501	Soft Tissue Procedures with CC
502	Soft Tissue Procedures without CC/MCC

Typical Clinical Scenarios

An elderly patient with a long-standing brachial plexus injury develops a fixed flexion contracture and dense scar bands in the left upper arm that significantly limit shoulder and elbow range of motion. The patient is admitted for a planned inpatient procedure to surgically free the left upper arm muscle from adherent scar tissue and release the contracture to restore functional mobility. Typical codes: 0KN80ZZ
A middle-aged patient presents to the hospital after a severe forearm and upper arm contusion with developing myofascial compartment tethering and painful restriction of the left upper arm despite conservative therapy; urgent intervention is required to relieve the constraint and prevent progressive dysfunction. Inpatient release of the left upper arm muscle is performed using a minimally invasive percutaneous technique to divide the restrictive bands. Typical codes: 0KN83ZZ
A patient with a chronic adhesive band causing recurrent pain after prior open shoulder/upper-arm surgery is admitted for revision treatment when physical therapy fails; the team performs an endoscopic-assisted release to precisely free the left upper arm muscle while minimizing additional soft-tissue trauma. Typical codes: 0KN84ZZ, 0KN80ZZ

Related Codes

0KN0-HEAD-MUSCLE-RELEASE

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

0KN1-FACIAL-MUSCLE-RELEASE

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

0KN2-NECK-MUSCLE-RELEASE

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

0KN3-NECK-MUSCLE-RELEASE

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

0KN4-TONGUE-PALATE-PHARYNX-RELEASE

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

0KN5-SHOULDER-MUSCLE-RELEASE

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

0KN6-LEFT-SHOULDER-RELEASE

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

0KN7-UPPER-ARM-MUSCLE-RELEASE

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

0KN9-LOWER-ARM-AND-WRIST-RELEASE

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

0KNB-LEFT-LOWER-ARM-RELEASE

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

Showing 1–10 of 25

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

4 rows

ICD-10-PCS Code	Description
0KN80ZZ	Release Left Upper Arm Muscle, Open Approach
0KN83ZZ	Release Left Upper Arm Muscle, Percutaneous Approach
0KN84ZZ	Release Left Upper Arm Muscle, Percutaneous Endoscopic Approach
0KN8XZZ	Release Left Upper Arm Muscle, External Approach

DRG Codes

3 rows

DRG Code	Description
500	Soft Tissue Procedures with MCC
501	Soft Tissue Procedures with CC
502	Soft Tissue Procedures without CC/MCC

Typical Clinical Scenarios

An elderly patient with a long-standing brachial plexus injury develops a fixed flexion contracture and dense scar bands in the left upper arm that significantly limit shoulder and elbow range of motion. The patient is admitted for a planned inpatient procedure to surgically free the left upper arm muscle from adherent scar tissue and release the contracture to restore functional mobility. Typical codes: 0KN80ZZ
A middle-aged patient presents to the hospital after a severe forearm and upper arm contusion with developing myofascial compartment tethering and painful restriction of the left upper arm despite conservative therapy; urgent intervention is required to relieve the constraint and prevent progressive dysfunction. Inpatient release of the left upper arm muscle is performed using a minimally invasive percutaneous technique to divide the restrictive bands. Typical codes: 0KN83ZZ
A patient with a chronic adhesive band causing recurrent pain after prior open shoulder/upper-arm surgery is admitted for revision treatment when physical therapy fails; the team performs an endoscopic-assisted release to precisely free the left upper arm muscle while minimizing additional soft-tissue trauma. Typical codes: 0KN84ZZ, 0KN80ZZ

Related Codes

0KN0-HEAD-MUSCLE-RELEASE

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

0KN1-FACIAL-MUSCLE-RELEASE

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

0KN2-NECK-MUSCLE-RELEASE

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

0KN3-NECK-MUSCLE-RELEASE

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

0KN4-TONGUE-PALATE-PHARYNX-RELEASE

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

0KN5-SHOULDER-MUSCLE-RELEASE

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

0KN6-LEFT-SHOULDER-RELEASE

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

0KN7-UPPER-ARM-MUSCLE-RELEASE

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

0KN9-LOWER-ARM-AND-WRIST-RELEASE

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

0KNB-LEFT-LOWER-ARM-RELEASE

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

Showing 1–10 of 25

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 Upper Arm Muscle Left: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Upper Arm Muscle Left: Procedure Code Group Overview policy alerts

Upper Arm Muscle Release Procedure Overview

Code Attributes

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

Sign up for ICD-10-PCS Code For Upper Arm Muscle Left: Procedure Code Group Overview policy alerts

Upper Arm Muscle Release Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS 0KN8 group?

What is the clinical purpose of procedures coded to 0KN8?

In which ICD-10-PCS section and body system is 0KN8 classified?

How does accurate coding within 0KN8 affect inpatient reimbursement?

Which DRG categories are related to procedures in the 0KN8 group?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS 0KN8 group?

What is the clinical purpose of procedures coded to 0KN8?

In which ICD-10-PCS section and body system is 0KN8 classified?

How does accurate coding within 0KN8 affect inpatient reimbursement?

Which DRG categories are related to procedures in the 0KN8 group?

References