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ICD-10-PCS 2027 procedure code

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

✓ Valid for 2027

Short description: Monitor Cardiac Vasc Perfus, ICG dye, Extern

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 4A12XSH

4A12XSH is the ICD-10-PCS code for a monitoring procedure on the cardiac using an external approach with vascular perfusion (qualifier: indocyanine green dye). In ICD-10-PCS, monitoring means determining the level of a physiological or physical function repetitively over a period of time.

In plain terms, this corresponds to intra-operative coronary fluorescence vascular angiography, the ICD-9-CM procedure title it maps to (88.59).

For a different body part, codes include 4A1BXSH (gastrointestinal) and 4A1GXSH (skin and breast).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

It was added in FY2017, effective October 1, 2016.

What each character means

1. Section
4Measurement and Monitoring
2. Body System
APhysiological Systems
3. Operation
1Monitoring

Determining the level of a physiological or physical function repetitively over a period of time

4. Body System
2Cardiac
5. Approach
XExternal

Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane

6. Function / Device
SVascular Perfusion
7. Qualifier
HIndocyanine Green Dye

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 88.59Intra-operative coronary fluorescence vascular angiographyapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2017 (effective 10/1/2016): Added
  • No changes since FY2017.

Common questions about 4A12XSH

Is 4A12XSH a valid ICD-10-PCS code for 2027?

Yes. 4A12XSH is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 4A12XSH?

The CMS GEMs map 4A12XSH to ICD-9-CM 88.59 (Intra-operative coronary fluorescence vascular angiography).