ICD-10-PCS Code For Cardiac: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group 5A12 includes procedures performed to completely take over a physiological function by extracorporeal means for the cardiac body part. These ICD-10-PCS codes are used for inpatient documentation when extracorporeal cardiac performance or replacement of heart function is provided using mechanical circulatory support or similar systems. Accurate coding within the ICD-10-PCS 5A12 group is essential for proper inpatient reimbursement, as it captures the performance of extracorporeal cardiac support and supports clinical documentation accuracy.

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Cardiac Performance Procedure Overview

Procedures in this group involve completely taking over the heart's function by extracorporeal means, often using a machine to perform or support cardiac activity outside the body. These procedures target the physiological systems body system and specifically the cardiac body part as defined in the code attributes. Accurate coding of these performance procedures is important for inpatient reimbursement because it documents the use of extracorporeal support and the level of care provided.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
5	Section	Extracorporeal or Systemic Assistance and Performance
A	Body System	Physiological Systems
1	Operation	Performance
2	Body Part	Cardiac

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ICD-10-PCS Code For Cardiac: Procedure Code Group Overview

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Cardiac Performance Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
5	Section	Extracorporeal or Systemic Assistance and Performance
A	Body System	Physiological Systems
1	Operation	Performance
2	Body Part	Cardiac

When to Use

Use a code from this group when the patient receives extracorporeal devices or systems that fully take over cardiac function during inpatient care. Codes apply when mechanical circulatory support is used to perform the heart's physiological pumping role rather than merely assist it.

ICD-10-PCS Codes

5 rows

ICD-10-PCS Code	Description
5A12012	Performance of Cardiac Output, Single, Manual
5A1213Z	Performance of Cardiac Pacing, Intermittent
5A1221J	Performance of Cardiac Output, Continuous, Automated
5A1221Z	Performance of Cardiac Output, Continuous
5A1223Z	Performance of Cardiac Pacing, Continuous

Typical Clinical Scenarios

An adult patient presents with cardiogenic shock following a large anterior myocardial infarction with severe left ventricular failure and hypotension refractory to vasopressors; the patient is admitted to the ICU for full mechanical circulatory support to completely take over cardiac pumping while myocardial recovery or transplantation is considered. Typical codes: 5A1221J, 5A1221Z
A pediatric patient with congenital cardiomyopathy is admitted electively for planned initiation of continuous extracorporeal cardiac performance as a bridge to heart transplant; the inpatient procedure provides continuous automated external cardiac support to maintain systemic perfusion during stabilization and evaluation. Typical codes: 5A1221J, 5A1221Z
A postoperative adult develops acute device failure of a temporary assist device after cardiac surgery resulting in recurrent low output and end-organ hypoperfusion; in response, the team institutes continuous extracorporeal cardiac performance to fully assume cardiac function while addressing the complication and planning definitive therapy. Typical codes: 5A1221Z, 5A12012

Related Codes

5A15-CIRCULATORY-PERFORMANCE

ICD-10-PCS Code For Circulatory: Procedure Code Group Overview

5A19-RESPIRATORY-PERFORMANCE

ICD-10-PCS Code For Respiratory: Procedure Code Group Overview

5A1C-BILIARY-PERFORMANCE

ICD-10-PCS Code For Biliary: Procedure Code Group Overview

5A1D-URINARY-PERFORMANCE

ICD-10-PCS Code For Urinary: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-PCS Codes

5 rows

ICD-10-PCS Code	Description
5A12012	Performance of Cardiac Output, Single, Manual
5A1213Z	Performance of Cardiac Pacing, Intermittent
5A1221J	Performance of Cardiac Output, Continuous, Automated
5A1221Z	Performance of Cardiac Output, Continuous
5A1223Z	Performance of Cardiac Pacing, Continuous

Typical Clinical Scenarios

An adult patient presents with cardiogenic shock following a large anterior myocardial infarction with severe left ventricular failure and hypotension refractory to vasopressors; the patient is admitted to the ICU for full mechanical circulatory support to completely take over cardiac pumping while myocardial recovery or transplantation is considered. Typical codes: 5A1221J, 5A1221Z
A pediatric patient with congenital cardiomyopathy is admitted electively for planned initiation of continuous extracorporeal cardiac performance as a bridge to heart transplant; the inpatient procedure provides continuous automated external cardiac support to maintain systemic perfusion during stabilization and evaluation. Typical codes: 5A1221J, 5A1221Z
A postoperative adult develops acute device failure of a temporary assist device after cardiac surgery resulting in recurrent low output and end-organ hypoperfusion; in response, the team institutes continuous extracorporeal cardiac performance to fully assume cardiac function while addressing the complication and planning definitive therapy. Typical codes: 5A1221Z, 5A12012

Related Codes

5A15-CIRCULATORY-PERFORMANCE

ICD-10-PCS Code For Circulatory: Procedure Code Group Overview

5A19-RESPIRATORY-PERFORMANCE

ICD-10-PCS Code For Respiratory: Procedure Code Group Overview

5A1C-BILIARY-PERFORMANCE

ICD-10-PCS Code For Biliary: Procedure Code Group Overview

5A1D-URINARY-PERFORMANCE

ICD-10-PCS Code For Urinary: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-PCS Code For Cardiac: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Cardiac: Procedure Code Group Overview policy alerts

Cardiac Performance Procedure Overview

Code Attributes

ICD-10-PCS Code For Cardiac: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Cardiac: Procedure Code Group Overview policy alerts

Cardiac Performance Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS 5A12 code group?

What is the section and operation attribute for these codes?

When should coders use ICD-10-PCS 5A12 codes in documentation?

What body system and body part do these codes target?

How do the individual codes within 5A12 differ in procedure type?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the ICD-10-PCS 5A12 code group?

What is the section and operation attribute for these codes?

When should coders use ICD-10-PCS 5A12 codes in documentation?

What body system and body part do these codes target?

How do the individual codes within 5A12 differ in procedure type?

References