ICD-10-PCS Tabular Index · Section B · FY 2026 BN2

BN2 Computerized Tomography (CT Scan) - Skull and Facial Bones ICD-10-PCS

The BN2 code range contains 25 ICD-10-PCS codes for Computerized Tomography (CT Scan) procedures on the skull and facial bones. 24 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
25
Procedure Codes
24
Billable Codes
BN2
Characters 1–3
BN
Parent Body System

Root Operation Definition

Computerized Tomography (CT Scan): Computer-reformatted digital display of multiplanar images developed from the capture of multiple exposures of external ionizing radiation.

ICD-10-PCS

Codes in the BN2 Range 25 codes · 24 billable

25 of 25 shown
  • BN2 Imaging, Skull and Facial Bones, Computerized Tomography (CT Scan)Non-billable header
  • BN200ZZ Computerized Tomography (CT Scan) of Skull using High Osmolar Contrast
  • BN201ZZ Computerized Tomography (CT Scan) of Skull using Low Osmolar Contrast
  • BN20YZZ Computerized Tomography (CT Scan) of Skull using Other Contrast
  • BN20ZZZ Computerized Tomography (CT Scan) of Skull
  • 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
  • BN250ZZ Computerized Tomography (CT Scan) of Facial Bones using High Osmolar Contrast
  • BN251ZZ Computerized Tomography (CT Scan) of Facial Bones using Low Osmolar Contrast
  • BN25YZZ Computerized Tomography (CT Scan) of Facial Bones using Other Contrast
  • BN25ZZZ Computerized Tomography (CT Scan) of Facial Bones
  • BN260ZZ Computerized Tomography (CT Scan) of Mandible using High Osmolar Contrast
  • BN261ZZ Computerized Tomography (CT Scan) of Mandible using Low Osmolar Contrast
  • BN26YZZ Computerized Tomography (CT Scan) of Mandible using Other Contrast
  • BN26ZZZ Computerized Tomography (CT Scan) of Mandible
  • BN290ZZ Computerized Tomography (CT Scan) of Bilateral Temporomandibular Joints using High Osmolar Contrast
  • BN291ZZ Computerized Tomography (CT Scan) of Bilateral Temporomandibular Joints using Low Osmolar Contrast
  • BN29YZZ Computerized Tomography (CT Scan) of Bilateral Temporomandibular Joints using Other Contrast
  • BN29ZZZ Computerized Tomography (CT Scan) of Bilateral Temporomandibular Joints
  • 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

About the BN2 Code Range

The ICD-10-PCS root operation BN2 - Computerized Tomography (CT Scan) refers to the use of CT imaging techniques to obtain detailed radiographic views of specific body parts, focusing here on the Skull and Facial Bones. This imaging procedure is classified under the Imaging section and captures cross-sectional images to assist in diagnosis and treatment planning.

This operation includes a wide range of codes that specify the exact body parts examined—such as the Skull, Bilateral Orbits, Facial Bones, Mandible, Bilateral Temporomandibular Joints, and Temporal Bones. It also details the use of different types of contrast media, including High Osmolar Contrast, Low Osmolar Contrast, or Other Contrast, as well as studies performed without contrast. For example, BN200ZZ codes a CT scan of the Skull using High Osmolar Contrast, whereas BN23ZZZ represents a CT scan of the Bilateral Orbits without contrast. Accurate selection of these ICD-10-PCS CT scan codes supports precise documentation when imaging skull and facial structures for clinical evaluation.

Questions About This Page

How many billable codes are in the BN2 range?

Of the 25 codes in this range, 24 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.

What does the BN2 range classify?

The range classifies Computerized Tomography (CT Scan) procedures, computer-reformatted digital display of multiplanar images developed from the capture of multiple exposures of external ionizing radiation, performed on the skull and facial bones. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.

Related References

Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.