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ICD-10-PCS 2027 procedure code

5A1221ZPerformance of Cardiac Output, Continuous

✓ Valid for 2027

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 5A1221Z

5A1221Z is the ICD-10-PCS code for a performance procedure on the cardiac using a continuous approach with output. In ICD-10-PCS, performance means completely taking over a physiological function by extracorporeal means.

In plain terms, this corresponds to extracorporeal circulation auxiliary to open heart surgery and percutaneous cardiopulmonary bypass, the ICD-9-CM procedure titles it maps to (39.61 and 39.66).

With a different device, use 5A1223Z (pacing).

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

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
5Extracorporeal or Systemic Assistance and Performance
2. Body System
APhysiological Systems
3. Operation
1Performance

Completely taking over a physiological function by extracorporeal means

4. Body System
2Cardiac
5. Duration
2Continuous
6. Function
1Output
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different function

Different qualifier

ICD-9-CM equivalent

Converter →
  • 39.61Extracorporeal circulation auxiliary to open heart surgeryapproximate
  • 39.66Percutaneous cardiopulmonary bypassapproximate

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 5A1221Z

Is 5A1221Z a valid ICD-10-PCS code for 2027?

Yes. 5A1221Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 5A1221Z?

The CMS GEMs map 5A1221Z to ICD-9-CM 39.61 (Extracorporeal circulation auxiliary to open heart surgery) and 39.66 (Percutaneous cardiopulmonary bypass).