ICD-10-PCS Code For Orbits, Bilateral: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group BN23 includes procedures performed to image the bilateral orbits using computerized tomography. These ICD-10-PCS codes are used for inpatient documentation when multiplanar computed tomography imaging of the orbits is obtained to evaluate trauma, infection, neoplasm, or other orbital pathology. Accurate coding within the ICD-10-PCS BN23 group is essential for proper inpatient reimbursement, as it captures the specific imaging procedure performed and supports clinical documentation accuracy.

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Orbits, Bilateral Computerized Tomography Procedure Overview

This procedure group includes computerized tomography imaging of the bilateral orbits within the skull and facial bones body system. These procedures capture multiplanar cross-sectional images using external ionizing radiation to evaluate orbital anatomy and pathology. Accurate coding is important for inpatient reimbursement because it documents the specific imaging performed and supports appropriate case mix classification.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
N	Body System	Skull and Facial Bones
2	Operation	Computerized Tomography (CT Scan)
3	Body Part	Orbits, Bilateral

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ICD-10-PCS Code For Orbits, Bilateral: Procedure Code Group Overview

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Orbits, Bilateral Computerized Tomography Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
B	Section	Imaging
N	Body System	Skull and Facial Bones
2	Operation	Computerized Tomography (CT Scan)
3	Body Part	Orbits, Bilateral

When to Use

Use a code from this group when inpatient computerized tomography imaging of both orbits is performed to evaluate orbital structures. Typical clinical indications include assessment of orbital trauma, suspected fractures, inflammatory or infectious processes, and suspected masses affecting the orbits.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
BN230ZZ	Computerized Tomography (CT Scan) of Bilateral Orbits using High Osmolar Contrast
BN231ZZ	Computerized Tomography (CT Scan) of Bilateral Orbits using Low Osmolar Contrast
BN23YZZ	Computerized Tomography (CT Scan) of Bilateral Orbits using Other Contrast
BN23ZZZ	Computerized Tomography (CT Scan) of Bilateral Orbits

Typical Clinical Scenarios

An adult presents to the emergency department after blunt facial trauma from a motor vehicle collision with periorbital swelling, diplopia, and suspected orbital wall fracture; the patient is admitted for observation and surgical consultation, and a multiplanar CT of both orbits is obtained to evaluate fracture extent and globe position. Typical codes: BN23ZZZ.
An inpatient with a history of sinus cancer undergoing staging evaluation has new-onset proptosis and concern for bilateral orbital involvement; contrast-enhanced multiplanar CT is ordered to assess extent of tumor invasion and to guide multidisciplinary treatment planning. Typical codes: BN230ZZ, BN231ZZ.
A hospitalized patient with acute bilateral orbital cellulitis and worsening vision despite antibiotics requires detailed imaging to assess abscess formation and orbital apex involvement; a contrast-enhanced CT of the orbits is performed urgently to guide possible surgical drainage. Typical codes: BN231ZZ, BN23YZZ.

Related Codes

BN20-SKULL-COMPUTERIZED-TOMOGRAPHY

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

BN25-FACIAL-BONES-COMPUTERIZED-TOMOGRAPHY

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

BN26-MANDIBLE-COMPUTERIZED-TOMOGRAPHY

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

BN29-TEMPOROMANDIBULAR-JOINTS-COMPUTERIZED-TOMOGRAPHY

ICD-10-PCS Code For Temporomandibular Joints: Procedure Code Group Overview

BN2F-TEMPORAL-BONES-COMPUTERIZED-TOMOGRAPHY

ICD-10-PCS Code For Temporal Bones: Procedure Code Group Overview

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
BN230ZZ	Computerized Tomography (CT Scan) of Bilateral Orbits using High Osmolar Contrast
BN231ZZ	Computerized Tomography (CT Scan) of Bilateral Orbits using Low Osmolar Contrast
BN23YZZ	Computerized Tomography (CT Scan) of Bilateral Orbits using Other Contrast
BN23ZZZ	Computerized Tomography (CT Scan) of Bilateral Orbits

Typical Clinical Scenarios

An adult presents to the emergency department after blunt facial trauma from a motor vehicle collision with periorbital swelling, diplopia, and suspected orbital wall fracture; the patient is admitted for observation and surgical consultation, and a multiplanar CT of both orbits is obtained to evaluate fracture extent and globe position. Typical codes: BN23ZZZ.
An inpatient with a history of sinus cancer undergoing staging evaluation has new-onset proptosis and concern for bilateral orbital involvement; contrast-enhanced multiplanar CT is ordered to assess extent of tumor invasion and to guide multidisciplinary treatment planning. Typical codes: BN230ZZ, BN231ZZ.
A hospitalized patient with acute bilateral orbital cellulitis and worsening vision despite antibiotics requires detailed imaging to assess abscess formation and orbital apex involvement; a contrast-enhanced CT of the orbits is performed urgently to guide possible surgical drainage. Typical codes: BN231ZZ, BN23YZZ.

Related Codes

BN20-SKULL-COMPUTERIZED-TOMOGRAPHY

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

BN25-FACIAL-BONES-COMPUTERIZED-TOMOGRAPHY

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

BN26-MANDIBLE-COMPUTERIZED-TOMOGRAPHY

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

BN29-TEMPOROMANDIBULAR-JOINTS-COMPUTERIZED-TOMOGRAPHY

ICD-10-PCS Code For Temporomandibular Joints: Procedure Code Group Overview

BN2F-TEMPORAL-BONES-COMPUTERIZED-TOMOGRAPHY

ICD-10-PCS Code For Temporal Bones: Procedure Code Group Overview

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 Orbits, Bilateral: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Orbits, Bilateral: Procedure Code Group Overview policy alerts

Orbits, Bilateral Computerized Tomography Procedure Overview

Code Attributes

ICD-10-PCS Code For Orbits, Bilateral: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Orbits, Bilateral: Procedure Code Group Overview policy alerts

Orbits, Bilateral Computerized Tomography Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in ICD-10-PCS code group BN23?

What is the primary operation and body system described for BN23 codes?

How does accurate coding within BN23 affect inpatient documentation and reimbursement?

When would a BN23 CT scan of the bilateral orbits typically be obtained?

What are the differences among the individual codes listed in the BN23 group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in ICD-10-PCS code group BN23?

What is the primary operation and body system described for BN23 codes?

How does accurate coding within BN23 affect inpatient documentation and reimbursement?

When would a BN23 CT scan of the bilateral orbits typically be obtained?

What are the differences among the individual codes listed in the BN23 group?

References