B2171ZZFluoroscopy of Right Internal Mammary Bypass Graft using Low Osmolar Contrast

  • Billable / Specific Code
ICD-10-PCS B2171ZZ
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

B2171ZZ is a billable ICD-10-PCS procedure code for Fluoroscopy of Right Internal Mammary Bypass Graft using Low Osmolar Contrast. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 276, 277, 286, 287. 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
B2171ZZ
Billable Status
Yes — Valid for Submission
Code Describes
Fluoroscopy of Right Internal Mammary Bypass Graft using Low Osmolar Contrast
Parent Code
Short Description
Fluoroscopy of R Int Mamm Graft using L Osm 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.

PositionDesignationValueMeaning
1SectionBImaging
2Body System2Heart
3Type1Fluoroscopy
4BodyPart7Internal Mammary Bypass Graft, Right
5Contrast1Low Osmolar
6QualifierZNone
7QualifierZNone

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for B2171ZZ under the General Equivalence Mappings.

88.55
Approximate match.
88.56
Approximate match.

Similar Procedure Codes

Questions About B2171ZZ

Is B2171ZZ a billable code?

Yes. B2171ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Fluoroscopy of Right Internal Mammary Bypass Graft using Low Osmolar Contrast on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in B2171ZZ mean?

B2171ZZ breaks down character by character: the 1st character B is the Section (Imaging); the 2nd character 2 is the Body System (Heart); the 3rd character 1 is the Type (Fluoroscopy); the 4th character 7 is the BodyPart (Internal Mammary Bypass Graft, Right); the 5th character 1 is the Contrast (Low Osmolar); the 6th character Z is the Qualifier (None); the 7th character Z is the Qualifier (None).

What MS-DRG does B2171ZZ group to?

On an inpatient stay, Fluoroscopy of Right Internal Mammary Bypass Graft using Low Osmolar Contrast maps to MS-DRGs 276, 277, 286, 287, with relative weights from 1.0701 to 6.0066. The MS-DRG sets the fixed Medicare payment for the stay.

What is the ICD-9-PCS equivalent of B2171ZZ?

Under the General Equivalence Mappings, Fluoroscopy of Right Internal Mammary Bypass Graft using Low Osmolar Contrast crosswalks to ICD-9-PCS 88.55 and 88.56. The mapping is approximate, so confirm it fits the documentation.