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

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group BN2F includes procedures performed to image the skull and facial bones using computerized tomography of the temporal bones. These ICD-10-PCS codes are used for inpatient documentation when detailed multiplanar computed tomography imaging of the temporal bones is performed to evaluate disease, injury, or surgical planning. Accurate coding within the ICD-10-PCS BN2F group is essential for proper inpatient reimbursement, as it captures the specific imaging modality and body part evaluated and supports clinical documentation accuracy.

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Temporal Bones Computerized Tomography Procedure Overview

This procedure group includes computerized tomography imaging of the temporal bones, targeting the skull and facial bones body system. These procedures involve computer-reformatted multiplanar images developed from multiple exposures of external ionizing radiation to visualize the temporal bones in detail. Accurate coding of these imaging procedures matters for inpatient reimbursement because it documents the exact imaging modality and body part evaluated, which affects case mix and payment.

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)
F	Body Part	Temporal Bones

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

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Temporal Bones 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)
F	Body Part	Temporal Bones

When to Use

Use a code from this group when a computerized tomography scan with computer-reformatted multiplanar images is performed to evaluate the temporal bones. These codes apply for inpatient documentation when the CT imaging is part of the patient’s hospital care for diagnosis, treatment planning, or postoperative assessment.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
BN2F0ZZ	Computerized Tomography (CT Scan) of Temporal Bones using High Osmolar Contrast
BN2F1ZZ	Computerized Tomography (CT Scan) of Temporal Bones using Low Osmolar Contrast
BN2FYZZ	Computerized Tomography (CT Scan) of Temporal Bones using Other Contrast
BN2FZZZ	Computerized Tomography (CT Scan) of Temporal Bones

Typical Clinical Scenarios

A middle-aged patient presents to the emergency department after a temporal bone fracture from a motor vehicle collision with persistent otorrhagia and suspected ossicular chain disruption. The patient is admitted for observation and surgical planning; a noninvasive CT study with computer-reformatted multiplanar images is obtained to delineate the fracture lines, air cell involvement, and relationship to the facial nerve. The imaging is performed without contrast when no contrast indication exists, or with contrast selection documented if indicated. Typical codes: BN2FZZZ
An adult with progressive conductive hearing loss and cholesteatoma is scheduled for preoperative assessment prior to tympanomastoid surgery. Inpatient preop evaluation includes high-resolution CT with computer-reformatted multiplanar images of the temporal bones to map disease extent, assess ossicular erosion, and plan the surgical approach. If intravenous contrast is used to better delineate soft tissue versus recurrent disease, the corresponding contrast-specific code is selected. Typical codes: BN2F1ZZ
A postoperative patient develops new facial nerve palsy following mastoidectomy, raising concern for residual compression or hematoma affecting the temporal bone region. The patient is admitted and undergoes urgent CT with computer-reformatted multiplanar images of the temporal bones to evaluate postoperative changes, identify complications, and guide potential reintervention. Contrast use is determined by the need to differentiate enhancing tissue from postoperative fluid collections. Typical codes: BN2FYZZ

Related Codes

BN20-SKULL-COMPUTERIZED-TOMOGRAPHY

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

BN23-ORBITS-BILATERAL-COMPUTERIZED-TOMOGRAPHY

ICD-10-PCS Code For Orbits, Bilateral: 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

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
BN2F0ZZ	Computerized Tomography (CT Scan) of Temporal Bones using High Osmolar Contrast
BN2F1ZZ	Computerized Tomography (CT Scan) of Temporal Bones using Low Osmolar Contrast
BN2FYZZ	Computerized Tomography (CT Scan) of Temporal Bones using Other Contrast
BN2FZZZ	Computerized Tomography (CT Scan) of Temporal Bones

Typical Clinical Scenarios

A middle-aged patient presents to the emergency department after a temporal bone fracture from a motor vehicle collision with persistent otorrhagia and suspected ossicular chain disruption. The patient is admitted for observation and surgical planning; a noninvasive CT study with computer-reformatted multiplanar images is obtained to delineate the fracture lines, air cell involvement, and relationship to the facial nerve. The imaging is performed without contrast when no contrast indication exists, or with contrast selection documented if indicated. Typical codes: BN2FZZZ
An adult with progressive conductive hearing loss and cholesteatoma is scheduled for preoperative assessment prior to tympanomastoid surgery. Inpatient preop evaluation includes high-resolution CT with computer-reformatted multiplanar images of the temporal bones to map disease extent, assess ossicular erosion, and plan the surgical approach. If intravenous contrast is used to better delineate soft tissue versus recurrent disease, the corresponding contrast-specific code is selected. Typical codes: BN2F1ZZ
A postoperative patient develops new facial nerve palsy following mastoidectomy, raising concern for residual compression or hematoma affecting the temporal bone region. The patient is admitted and undergoes urgent CT with computer-reformatted multiplanar images of the temporal bones to evaluate postoperative changes, identify complications, and guide potential reintervention. Contrast use is determined by the need to differentiate enhancing tissue from postoperative fluid collections. Typical codes: BN2FYZZ

Related Codes

BN20-SKULL-COMPUTERIZED-TOMOGRAPHY

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

BN23-ORBITS-BILATERAL-COMPUTERIZED-TOMOGRAPHY

ICD-10-PCS Code For Orbits, Bilateral: 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

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 Temporal Bones: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Temporal Bones: Procedure Code Group Overview policy alerts

Temporal Bones Computerized Tomography Procedure Overview

Code Attributes

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

Sign up for ICD-10-PCS Code For Temporal Bones: Procedure Code Group Overview policy alerts

Temporal Bones Computerized Tomography Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the BN2F ICD-10-PCS group?

What body system and operation do BN2F codes represent?

How does accurate coding in the BN2F group affect inpatient documentation?

When are BN2F codes used in clinical practice?

Are there related DRGs listed for the BN2F code group?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the BN2F ICD-10-PCS group?

What body system and operation do BN2F codes represent?

How does accurate coding in the BN2F group affect inpatient documentation?

When are BN2F codes used in clinical practice?

Are there related DRGs listed for the BN2F code group?

References