4A12XSHMonitoring of Cardiac Vascular Perfusion using Indocyanine Green Dye, External Approach

Measurement and Monitoring›Physiological Systems›Monitoring
  • Billable / Specific Code
ICD-10-PCS 4A12XSH
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

4A12XSH is a billable ICD-10-PCS procedure code for Monitoring of Cardiac Vascular Perfusion using Indocyanine Green Dye, External Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Monitoring involves determining the level of a physiological or physical function repetitively over a period of time.

Code Identity

ICD-10-PCS Code
4A12XSH
Billable Status
Yes — Valid for Submission
Code Describes
Monitoring of Cardiac Vascular Perfusion using Indocyanine Green Dye, External Approach
Parent Code
4A1
Short Description
Monitor Cardiac Vasc Perfus, ICG dye, Extern

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
1Section4Measurement and Monitoring
2Body SystemAPhysiological Systems
3Operation1Monitoring
4BodySystem2Cardiac
5ApproachXExternal
6Function/DeviceSVascular Perfusion
7QualifierHIndocyanine Green Dye

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 4A12XSH under the General Equivalence Mappings.

88.59
Approximate match.

Code History

Replaces previously assigned code(s):
  • 3E033KZ — Introduce of Oth Diagn Subst into Periph Vein, Perc Approach
  • 3E043KZ — Introduce Oth Diagn Subst in Central Vein, Perc

Similar Procedure Codes

Questions About 4A12XSH

Is 4A12XSH a billable code?

Yes. 4A12XSH is a complete seven-character ICD-10-PCS code, specific enough to report Monitoring of Cardiac Vascular Perfusion using Indocyanine Green Dye, External Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 4A12XSH mean?

4A12XSH breaks down character by character: the 1st character 4 is the Section (Measurement and Monitoring); the 2nd character A is the Body System (Physiological Systems); the 3rd character 1 is the Operation (Monitoring); the 4th character 2 is the BodySystem (Cardiac); the 5th character X is the Approach (External); the 6th character S is the Function/Device (Vascular Perfusion); the 7th character H is the Qualifier (Indocyanine Green Dye).

What is the ICD-9-PCS equivalent of 4A12XSH?

Under the General Equivalence Mappings, Monitoring of Cardiac Vascular Perfusion using Indocyanine Green Dye, External Approach crosswalks to ICD-9-PCS 88.59. The mapping is approximate, so confirm it fits the documentation.