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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0KN0 includes procedures performed to release muscles in the head. These ICD-10-PCS codes are used for inpatient documentation when a clinician frees head muscle tissue from abnormal physical constraints such as adhesions, contractures, or entrapment. Accurate coding within the ICD-10-PCS 0KN0 group is essential for proper inpatient reimbursement, as it captures the specific release procedure performed and supports clinical documentation accuracy.

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Head Muscle Release Procedure Overview

This procedure group includes release procedures that free head muscles from abnormal physical constraints by cutting or using force. These procedures target the muscles body system in the head and involve incisions or manipulation to relieve tightness, adhesions, or contractures. Accurate ICD-10-PCS coding for these procedures ensures inpatient records reflect the specific root operation and body part, which affects case mix and reimbursement.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
K	Body System	Muscles
N	Operation	Release
0	Body Part	Head Muscle

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

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Head 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
0	Body Part	Head Muscle

When to Use

Use a code from this group when an inpatient procedure intentionally releases head muscle tissue from adhesions, contracture, or other abnormal physical restraints. Do not use these codes for procedures that alter muscles for cosmetic reasons or that involve other body systems.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
0KN00ZZ	Release Head Muscle, Open Approach
0KN03ZZ	Release Head Muscle, Percutaneous Approach
0KN04ZZ	Release Head Muscle, Percutaneous Endoscopic Approach
0KN0XZZ	Release Head 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 adult patient with longstanding post-traumatic scar contracture of the facial muscles (e.g., masseter or frontalis) presents with severe functional impairment of mastication or eyelid closure and progressive malnutrition or corneal exposure. The patient is admitted for a planned operative release to excise fibrotic adhesions and restore muscle excursion under general anesthesia; the goal is to free the head muscle from restrictive tissue to improve function. Typical codes: 0KN00ZZ, 0KN04ZZ
A child with congenital muscular torticollis who has failed conservative therapy and presents with persistent neck muscle contracture causing limited range of motion and positional deformity is scheduled for inpatient surgical release of the involved head/neck muscle to correct the contracture and prevent craniofacial asymmetry. The procedure involves controlled division of the tight muscle fibers to release the abnormal physical constraint and regain mobility. Typical codes: 0KN03ZZ, 0KN00ZZ
An elderly inpatient develops acute entrapment of a cranial muscle due to postoperative adhesions after prior head surgery, resulting in sudden pain and loss of function that compromises recovery; the team performs an urgent release to sharply divide adhesions and free the entrapped muscle to relieve pain and restore movement. Typical codes: 0KN00ZZ, 0KN04ZZ

Related Codes

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

0KN8-UPPER-ARM-MUSCLE-RELEASE

ICD-10-PCS Code For Upper Arm Muscle Left: 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
0KN00ZZ	Release Head Muscle, Open Approach
0KN03ZZ	Release Head Muscle, Percutaneous Approach
0KN04ZZ	Release Head Muscle, Percutaneous Endoscopic Approach
0KN0XZZ	Release Head 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 adult patient with longstanding post-traumatic scar contracture of the facial muscles (e.g., masseter or frontalis) presents with severe functional impairment of mastication or eyelid closure and progressive malnutrition or corneal exposure. The patient is admitted for a planned operative release to excise fibrotic adhesions and restore muscle excursion under general anesthesia; the goal is to free the head muscle from restrictive tissue to improve function. Typical codes: 0KN00ZZ, 0KN04ZZ
A child with congenital muscular torticollis who has failed conservative therapy and presents with persistent neck muscle contracture causing limited range of motion and positional deformity is scheduled for inpatient surgical release of the involved head/neck muscle to correct the contracture and prevent craniofacial asymmetry. The procedure involves controlled division of the tight muscle fibers to release the abnormal physical constraint and regain mobility. Typical codes: 0KN03ZZ, 0KN00ZZ
An elderly inpatient develops acute entrapment of a cranial muscle due to postoperative adhesions after prior head surgery, resulting in sudden pain and loss of function that compromises recovery; the team performs an urgent release to sharply divide adhesions and free the entrapped muscle to relieve pain and restore movement. Typical codes: 0KN00ZZ, 0KN04ZZ

Related Codes

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

0KN8-UPPER-ARM-MUSCLE-RELEASE

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

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

Head Muscle Release Procedure Overview

Code Attributes

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

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

Head Muscle Release Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code group covers release procedures for head muscles?

What are the individual ICD-10-PCS codes in the 0KN0 group and how are they formatted?

What is the clinical purpose of procedures captured by ICD-10-PCS group 0KN0?

Which ICD-10-PCS section, body system, and operation attributes apply to 0KN0 codes?

How do 0KN0 codes relate to DRG assignment for inpatient reimbursement?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code group covers release procedures for head muscles?

What are the individual ICD-10-PCS codes in the 0KN0 group and how are they formatted?

What is the clinical purpose of procedures captured by ICD-10-PCS group 0KN0?

Which ICD-10-PCS section, body system, and operation attributes apply to 0KN0 codes?

How do 0KN0 codes relate to DRG assignment for inpatient reimbursement?

References