ICD-10-PCS Code For Ethmoid Bone Right: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 0N9F includes procedures performed to drain fluids and gases from the ethmoid bone on the right side. These ICD-10-PCS codes are used for inpatient documentation when a clinician performs surgical or percutaneous drainage of fluid collections or abscesses in the right ethmoid bone. Accurate coding within the ICD-10-PCS 0N9F group is essential for proper inpatient reimbursement, as it captures the procedure performed and the specific anatomic site to determine appropriate case mix and payment.

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Ethmoid Bone, Right Drainage Procedure Overview

Procedures in this group involve draining fluids or gases from the right ethmoid bone and related structures of the head and facial bones. These drainage procedures target the head and facial bones body system and remove accumulated purulent material, serous fluid, or other collections from the ethmoid bone, right side. Accurate coding is important for inpatient reimbursement because it documents the specific surgical action and anatomic site, which affects case mix and payment.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
N	Body System	Head and Facial Bones
9	Operation	Drainage
F	Body Part	Ethmoid Bone, Right

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ICD-10-PCS Code For Ethmoid Bone Right: Procedure Code Group Overview

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Ethmoid Bone, Right Drainage Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
0	Section	Medical and Surgical
N	Body System	Head and Facial Bones
9	Operation	Drainage
F	Body Part	Ethmoid Bone, Right

When to Use

Use a code from this group when drainage of fluid, pus, or gas from the right ethmoid bone is performed during an inpatient stay. Do not use these codes for procedures on other paranasal sinuses or bilateral procedures unless the documentation specifies the right ethmoid bone and the root operation of drainage.

ICD-10-PCS Codes

9 rows

ICD-10-PCS Code	Description
0N9F00Z	Drainage of Right Ethmoid Bone with Drainage Device, Open Approach
0N9F0ZX	Drainage of Right Ethmoid Bone, Open Approach, Diagnostic
0N9F0ZZ	Drainage of Right Ethmoid Bone, Open Approach
0N9F30Z	Drainage of Right Ethmoid Bone with Drainage Device, Percutaneous Approach
0N9F3ZX	Drainage of Right Ethmoid Bone, Percutaneous Approach, Diagnostic
0N9F3ZZ	Drainage of Right Ethmoid Bone, Percutaneous Approach
0N9F40Z	Drainage of Right Ethmoid Bone with Drainage Device, Percutaneous Endoscopic Approach
0N9F4ZX	Drainage of Right Ethmoid Bone, Percutaneous Endoscopic Approach, Diagnostic
0N9F4ZZ	Drainage of Right Ethmoid Bone, Percutaneous Endoscopic Approach

DRG Codes

9 rows

DRG Code	Description
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
477	Biopsies of Musculoskeletal System and Connective Tissue with MCC
478	Biopsies of Musculoskeletal System and Connective Tissue with CC
479	Biopsies of Musculoskeletal System and Connective Tissue without CC/MCC
987	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with MCC
988	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with CC
989	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis without CC/MCC

Typical Clinical Scenarios

A 45-year-old male presents to the emergency department with acute onset high-grade fever, severe right-sided facial pain, and proptosis after several days of worsening nasal congestion. CT imaging shows a right ethmoid bone abscess with adjacent orbital cellulitis and a purulent collection requiring urgent surgical drainage via an open approach to decompress the sinus and prevent intracranial or orbital spread. An open drainage procedure with placement of a drain is performed during the inpatient admission. Typical codes: 0N9F00Z
A 32-year-old female with chronic recurrent right-sided ethmoid sinus infections scheduled for inpatient surgical management due to failure of medical therapy and recurrent mucopyocele formation. Under general anesthesia, a percutaneous endoscopic drainage is performed to evacuate chronic purulent material from the right ethmoid bone and facilitate ongoing drainage, with no additional diagnostic-only intent. Typical codes: 0N9F4ZZ
A 60-year-old diabetic patient previously treated with attempted percutaneous drainage of a right ethmoid collection presents with persistent drainage and recurrent abscess despite prior intervention. During the inpatient stay a percutaneous drainage procedure is repeated to obtain therapeutic evacuation and, if indicated, diagnostic sampling is performed to guide further antimicrobial therapy. Typical codes: 0N9F3ZX, 0N9F3ZZ

Related Codes

0N90-SKULL-DRAINAGE

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

0N91-FRONTAL-BONE-DRAINAGE

ICD-10-PCS Code For Frontal Bone: Procedure Code Group Overview

0N93-PARIETAL-BONE-DRAINAGE

ICD-10-PCS Code For Parietal Bone Right: Procedure Code Group Overview

0N94-LEFT-PARIETAL-BONE-DRAINAGE

ICD-10-PCS Code For Parietal Bone, Left: Procedure Code Group Overview

0N95-TEMPORAL-BONE-RIGHT-DRAINAGE

ICD-10-PCS Code For Temporal Bone, Right: Procedure Code Group Overview

0N96-TEMPORAL-BONE-DRAINAGE

ICD-10-PCS Code For Temporal Bone Left: Procedure Code Group Overview

0N97-OCCIPITAL-BONE-DRAINAGE

ICD-10-PCS Code For Occipital Bone: Procedure Code Group Overview

0N9B-NASAL-BONE-DRAINAGE

ICD-10-PCS Code For Nasal Bone: Procedure Code Group Overview

0N9C-SPHENOID-BONE-DRAINAGE

ICD-10-PCS Code For Sphenoid Bone: Procedure Code Group Overview

0N9G-ETHMOID-BONE-LEFT-DRAINAGE

ICD-10-PCS Code For Ethmoid Bone, Left: Procedure Code Group Overview

Showing 1–10 of 22

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
0N9F00Z	Drainage of Right Ethmoid Bone with Drainage Device, Open Approach
0N9F0ZX	Drainage of Right Ethmoid Bone, Open Approach, Diagnostic
0N9F0ZZ	Drainage of Right Ethmoid Bone, Open Approach
0N9F30Z	Drainage of Right Ethmoid Bone with Drainage Device, Percutaneous Approach
0N9F3ZX	Drainage of Right Ethmoid Bone, Percutaneous Approach, Diagnostic
0N9F3ZZ	Drainage of Right Ethmoid Bone, Percutaneous Approach
0N9F40Z	Drainage of Right Ethmoid Bone with Drainage Device, Percutaneous Endoscopic Approach
0N9F4ZX	Drainage of Right Ethmoid Bone, Percutaneous Endoscopic Approach, Diagnostic
0N9F4ZZ	Drainage of Right Ethmoid Bone, Percutaneous Endoscopic Approach

DRG Codes

9 rows

DRG Code	Description
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
477	Biopsies of Musculoskeletal System and Connective Tissue with MCC
478	Biopsies of Musculoskeletal System and Connective Tissue with CC
479	Biopsies of Musculoskeletal System and Connective Tissue without CC/MCC
987	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with MCC
988	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis with CC
989	Non-Extensive O.R. Procedures Unrelated to Principal Diagnosis without CC/MCC

Typical Clinical Scenarios

A 45-year-old male presents to the emergency department with acute onset high-grade fever, severe right-sided facial pain, and proptosis after several days of worsening nasal congestion. CT imaging shows a right ethmoid bone abscess with adjacent orbital cellulitis and a purulent collection requiring urgent surgical drainage via an open approach to decompress the sinus and prevent intracranial or orbital spread. An open drainage procedure with placement of a drain is performed during the inpatient admission. Typical codes: 0N9F00Z
A 32-year-old female with chronic recurrent right-sided ethmoid sinus infections scheduled for inpatient surgical management due to failure of medical therapy and recurrent mucopyocele formation. Under general anesthesia, a percutaneous endoscopic drainage is performed to evacuate chronic purulent material from the right ethmoid bone and facilitate ongoing drainage, with no additional diagnostic-only intent. Typical codes: 0N9F4ZZ
A 60-year-old diabetic patient previously treated with attempted percutaneous drainage of a right ethmoid collection presents with persistent drainage and recurrent abscess despite prior intervention. During the inpatient stay a percutaneous drainage procedure is repeated to obtain therapeutic evacuation and, if indicated, diagnostic sampling is performed to guide further antimicrobial therapy. Typical codes: 0N9F3ZX, 0N9F3ZZ

Related Codes

0N90-SKULL-DRAINAGE

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

0N91-FRONTAL-BONE-DRAINAGE

ICD-10-PCS Code For Frontal Bone: Procedure Code Group Overview

0N93-PARIETAL-BONE-DRAINAGE

ICD-10-PCS Code For Parietal Bone Right: Procedure Code Group Overview

0N94-LEFT-PARIETAL-BONE-DRAINAGE

ICD-10-PCS Code For Parietal Bone, Left: Procedure Code Group Overview

0N95-TEMPORAL-BONE-RIGHT-DRAINAGE

ICD-10-PCS Code For Temporal Bone, Right: Procedure Code Group Overview

0N96-TEMPORAL-BONE-DRAINAGE

ICD-10-PCS Code For Temporal Bone Left: Procedure Code Group Overview

0N97-OCCIPITAL-BONE-DRAINAGE

ICD-10-PCS Code For Occipital Bone: Procedure Code Group Overview

0N9B-NASAL-BONE-DRAINAGE

ICD-10-PCS Code For Nasal Bone: Procedure Code Group Overview

0N9C-SPHENOID-BONE-DRAINAGE

ICD-10-PCS Code For Sphenoid Bone: Procedure Code Group Overview

0N9G-ETHMOID-BONE-LEFT-DRAINAGE

ICD-10-PCS Code For Ethmoid Bone, Left: Procedure Code Group Overview

Showing 1–10 of 22

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 Ethmoid Bone Right: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Ethmoid Bone Right: Procedure Code Group Overview policy alerts

Ethmoid Bone, Right Drainage Procedure Overview

Code Attributes

ICD-10-PCS Code For Ethmoid Bone Right: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Ethmoid Bone Right: Procedure Code Group Overview policy alerts

Ethmoid Bone, Right Drainage 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 drainage procedures of the right ethmoid bone?

What are the code attributes for the 0N9F group?

Which specific procedure codes are included in the 0N9F ethmoid bone, right drainage group?

How does accurate coding within 0N9F affect inpatient reimbursement?

Which DRGs may be related to procedures coded in the 0N9F group?

References

When to Use

ICD-10-PCS Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

Which ICD-10-PCS code group covers drainage procedures of the right ethmoid bone?

What are the code attributes for the 0N9F group?

Which specific procedure codes are included in the 0N9F ethmoid bone, right drainage group?

How does accurate coding within 0N9F affect inpatient reimbursement?

Which DRGs may be related to procedures coded in the 0N9F group?

References