B3100ZZFluoroscopy of Thoracic Aorta using High Osmolar Contrast

Billable / Specific Code

ICD-10-PCS B3100ZZ

CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.

B3100ZZ is a billable ICD-10-PCS procedure code for Fluoroscopy of Thoracic Aorta using High Osmolar Contrast. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Fluoroscopy involves single plane or bi-plane real time display of an image developed from the capture of external ionizing radiation on a fluorescent screen. The image may also be stored by either digital or analog means.

Code Identity

ICD-10-PCS Code

B3100ZZ

Billable Status

Yes — Valid for Submission

Code Describes

Fluoroscopy of Thoracic Aorta using High Osmolar Contrast

Parent Code

B31

Short Description

Fluoroscopy of Thoracic Aorta using High Osmolar Contrast

PCS Table Breakdown

Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.

Position	Designation	Value	Meaning
1	Section	B	Imaging
2	Body System	3	Upper Arteries
3	Type	1	Fluoroscopy
4	BodyPart	0	Thoracic Aorta
5	Contrast	0	High Osmolar
6	Qualifier	Z	None
7	Qualifier	Z	None

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for B3100ZZ under the General Equivalence Mappings.

88.42

Approximate match.

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Questions About B3100ZZ

Is B3100ZZ a billable code?

Yes. B3100ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Fluoroscopy of Thoracic Aorta using High Osmolar Contrast on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in B3100ZZ mean?

B3100ZZ breaks down character by character: the 1st character B is the Section (Imaging); the 2nd character 3 is the Body System (Upper Arteries); the 3rd character 1 is the Type (Fluoroscopy); the 4th character 0 is the BodyPart (Thoracic Aorta); the 5th character 0 is the Contrast (High Osmolar); the 6th character Z is the Qualifier (None); the 7th character Z is the Qualifier (None).

What is the ICD-9-PCS equivalent of B3100ZZ?

Under the General Equivalence Mappings, Fluoroscopy of Thoracic Aorta using High Osmolar Contrast crosswalks to ICD-9-PCS 88.42. The mapping is approximate, so confirm it fits the documentation.