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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0K91 includes procedures performed to drain fluids or gases from facial muscle. These ICD-10-PCS codes are used for inpatient documentation when there is a need to evacuate fluid collections, abscesses, or hematomas from the facial muscle. Accurate coding within the ICD-10-PCS 0K91 group is essential for proper inpatient reimbursement, as it captures the procedure performed and the specific body part treated, supporting clinical documentation accuracy.

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Facial Muscle Drainage Procedure Overview

The procedures in ICD-10 PCS 0K91 involve drainage of the facial muscle and target the muscles body system. These inpatient procedures remove fluids or gases from facial muscle tissue to treat infection, hematoma, or other fluid collections. Accurate coding of these drainage procedures is important for proper inpatient reimbursement because it captures the specific operation and body part treated, supporting clinical documentation and payment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
K	Body System	Muscles
9	Operation	Drainage
1	Body Part	Facial Muscle

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

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Facial Muscle Drainage Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
K	Body System	Muscles
9	Operation	Drainage
1	Body Part	Facial Muscle

When to Use

Use a code from this group when an inpatient procedure specifically drains fluid or gas from facial muscle tissue. Select the code that matches the drainage approach and the facial muscle body part documented in the operative note.

ICD-10-PCS Codes

9 rows

ICD-10-PCS Code	Description
0K9100Z	Drainage of Facial Muscle with Drainage Device, Open Approach
0K910ZX	Drainage of Facial Muscle, Open Approach, Diagnostic
0K910ZZ	Drainage of Facial Muscle, Open Approach
0K9130Z	Drainage of Facial Muscle with Drainage Device, Percutaneous Approach
0K913ZX	Drainage of Facial Muscle, Percutaneous Approach, Diagnostic
0K913ZZ	Drainage of Facial Muscle, Percutaneous Approach
0K9140Z	Drainage of Facial Muscle with Drainage Device, Percutaneous Endoscopic Approach
0K914ZX	Drainage of Facial Muscle, Percutaneous Endoscopic Approach, Diagnostic
0K914ZZ	Drainage of Facial Muscle, Percutaneous Endoscopic Approach

DRG Codes

21 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
143	Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC
144	Other Ear, Nose, Mouth and Throat O.R. Procedures with CC
145	Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC
500	Soft Tissue Procedures with MCC
501	Soft Tissue Procedures with CC
502	Soft Tissue Procedures without CC/MCC
579	Other Skin, Subcutaneous Tissue and Breast Procedures with MCC

Showing 1–10 of 21

Typical Clinical Scenarios

An adult presents to the emergency department with rapidly expanding facial swelling, erythema, severe pain, fever, and signs of systemic infection after a dental abscess tracked into facial muscle planes; imaging shows a discrete intramuscular abscess of the masseter or buccinator requiring operative evacuation. The patient is admitted for urgent surgical drainage of the facial muscle to control infection and prevent airway compromise or deep fascial spread. Typical codes: 0K913ZZ, 0K914ZZ
An elderly patient on anticoagulant therapy develops a painful, enlarging facial hematoma within the facial musculature after minor facial trauma and progressive trismus; conservative measures fail and the hematoma is causing functional impairment and risk of skin breakdown. The patient is scheduled for an inpatient percutaneous or percutaneous endoscopic drainage of the facial muscle to evacuate the hematoma and restore function. Typical codes: 0K9130Z, 0K9140Z
A patient with a chronic draining sinus overlying a facial muscle from a previously treated infection returns with persistent purulent drainage despite antibiotics; operative exploration is planned to locate and definitively drain residual intramuscular collection and place a drainage device for continued postoperative evacuation. This inpatient procedure targets the facial muscle to remove the collection and allow healing. Typical codes: 0K9100Z, 0K9130Z

Related Codes

0K90-HEAD-MUSCLE-DRAINAGE

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

0K92-NECK-MUSCLE-RIGHT-DRAINAGE

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

0K93-NECK-MUSCLE-LEFT-DRAINAGE

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

0K94-TONGUE-PALATE-PHARYNX-DRAINAGE

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

0K95-SHOULDER-MUSCLE-DRAINAGE

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

0K96-SHOULDER-MUSCLE-LEFT-DRAINAGE

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

0K97-UPPER-ARM-MUSCLE-DRAINAGE

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

0K98-LEFT-UPPER-ARM-DRAINAGE

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

0K99-LOWER-ARM-AND-WRIST-DRAINAGE

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

0K9B-LEFT-LOWER-ARM-DRAINAGE

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

9 rows

ICD-10-PCS Code	Description
0K9100Z	Drainage of Facial Muscle with Drainage Device, Open Approach
0K910ZX	Drainage of Facial Muscle, Open Approach, Diagnostic
0K910ZZ	Drainage of Facial Muscle, Open Approach
0K9130Z	Drainage of Facial Muscle with Drainage Device, Percutaneous Approach
0K913ZX	Drainage of Facial Muscle, Percutaneous Approach, Diagnostic
0K913ZZ	Drainage of Facial Muscle, Percutaneous Approach
0K9140Z	Drainage of Facial Muscle with Drainage Device, Percutaneous Endoscopic Approach
0K914ZX	Drainage of Facial Muscle, Percutaneous Endoscopic Approach, Diagnostic
0K914ZZ	Drainage of Facial Muscle, Percutaneous Endoscopic Approach

DRG Codes

21 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
143	Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC
144	Other Ear, Nose, Mouth and Throat O.R. Procedures with CC
145	Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC
500	Soft Tissue Procedures with MCC
501	Soft Tissue Procedures with CC
502	Soft Tissue Procedures without CC/MCC
579	Other Skin, Subcutaneous Tissue and Breast Procedures with MCC

Showing 1–10 of 21

Typical Clinical Scenarios

An adult presents to the emergency department with rapidly expanding facial swelling, erythema, severe pain, fever, and signs of systemic infection after a dental abscess tracked into facial muscle planes; imaging shows a discrete intramuscular abscess of the masseter or buccinator requiring operative evacuation. The patient is admitted for urgent surgical drainage of the facial muscle to control infection and prevent airway compromise or deep fascial spread. Typical codes: 0K913ZZ, 0K914ZZ
An elderly patient on anticoagulant therapy develops a painful, enlarging facial hematoma within the facial musculature after minor facial trauma and progressive trismus; conservative measures fail and the hematoma is causing functional impairment and risk of skin breakdown. The patient is scheduled for an inpatient percutaneous or percutaneous endoscopic drainage of the facial muscle to evacuate the hematoma and restore function. Typical codes: 0K9130Z, 0K9140Z
A patient with a chronic draining sinus overlying a facial muscle from a previously treated infection returns with persistent purulent drainage despite antibiotics; operative exploration is planned to locate and definitively drain residual intramuscular collection and place a drainage device for continued postoperative evacuation. This inpatient procedure targets the facial muscle to remove the collection and allow healing. Typical codes: 0K9100Z, 0K9130Z

Related Codes

0K90-HEAD-MUSCLE-DRAINAGE

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

0K92-NECK-MUSCLE-RIGHT-DRAINAGE

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

0K93-NECK-MUSCLE-LEFT-DRAINAGE

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

0K94-TONGUE-PALATE-PHARYNX-DRAINAGE

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

0K95-SHOULDER-MUSCLE-DRAINAGE

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

0K96-SHOULDER-MUSCLE-LEFT-DRAINAGE

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

0K97-UPPER-ARM-MUSCLE-DRAINAGE

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

0K98-LEFT-UPPER-ARM-DRAINAGE

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

0K99-LOWER-ARM-AND-WRIST-DRAINAGE

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

0K9B-LEFT-LOWER-ARM-DRAINAGE

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

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

Facial Muscle Drainage Procedure Overview

Code Attributes

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

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

Facial Muscle Drainage Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which body system and operation does ICD-10-PCS code group 0K91 represent?

When should codes from the 0K91 group be used in inpatient documentation?

What are examples of individual ICD-10-PCS codes in the 0K91 group and their approaches?

How does accurate coding within 0K91 affect reimbursement?

Which related DRG groups might be associated with procedures coded to 0K91?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which body system and operation does ICD-10-PCS code group 0K91 represent?

When should codes from the 0K91 group be used in inpatient documentation?

What are examples of individual ICD-10-PCS codes in the 0K91 group and their approaches?

How does accurate coding within 0K91 affect reimbursement?

Which related DRG groups might be associated with procedures coded to 0K91?

References