5A1223ZPerformance of Cardiac Pacing, Continuous

Extracorporeal or Systemic Assistance and Performance›Physiological Systems›Performance

Billable / Specific Code

ICD-10-PCS 5A1223Z

CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.

5A1223Z is a billable ICD-10-PCS procedure code for Performance of Cardiac Pacing, Continuous. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Performance involves completely taking over a physiological function by extracorporeal means.

Code Identity

ICD-10-PCS Code

5A1223Z

Billable Status

Yes — Valid for Submission

Code Describes

Performance of Cardiac Pacing, Continuous

Parent Code

5A1

Short Description

Performance of Cardiac Pacing, Continuous

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.

Position	Designation	Value	Meaning
1	Section	5	Extracorporeal or Systemic Assistance and Performance
2	Body System	A	Physiological Systems
3	Operation	1	Performance
4	BodySystem	2	Cardiac
5	Duration	2	Continuous
6	Function	3	Pacing
7	Qualifier	Z	No Qualifier

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 5A1223Z under the General Equivalence Mappings.

37.78

Approximate match.

39.64

Approximate match.

Similar Procedure Codes

Questions About 5A1223Z

Is 5A1223Z a billable code?

Yes. 5A1223Z is a complete seven-character ICD-10-PCS code, specific enough to report Performance of Cardiac Pacing, Continuous on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 5A1223Z mean?

5A1223Z breaks down character by character: the 1st character 5 is the Section (Extracorporeal or Systemic Assistance and Performance); the 2nd character A is the Body System (Physiological Systems); the 3rd character 1 is the Operation (Performance); the 4th character 2 is the BodySystem (Cardiac); the 5th character 2 is the Duration (Continuous); the 6th character 3 is the Function (Pacing); the 7th character Z is the Qualifier (No Qualifier).

What is the ICD-9-PCS equivalent of 5A1223Z?

Under the General Equivalence Mappings, Performance of Cardiac Pacing, Continuous crosswalks to ICD-9-PCS 37.78 and 39.64. The mapping is approximate, so confirm it fits the documentation.