4A023FZ ICD-10-PCS Code: Measurement of Cardiac Rhythm, Percutaneous Approach

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

The MS-DRG grouper treats this as a non-operating-room procedure. It appears in the surgical logic of 6 MS-DRGs:

• MDC 05 — Concomitant Aortic and Mitral Valve Procedures: DRG 212
• MDC 05 — : DRG 216, DRG 217, DRG 218
• MDC 05 — Percutaneous and Other Intracardiac Procedures: DRG 273, DRG 274

From the CMS MS-DRG Definitions Manual, Appendix E. Actual DRG assignment depends on the complete claim.

Related Codes

Same operation — other Approach

Same table and root operation, differing only in the approach character.

4A020FZ — Measurement of Cardiac Rhythm, Open Approach, 4A027FZ — Measurement of Cardiac Rhythm, Via Natural or Artificial Opening, 4A028FZ — Measurement of Cardiac Rhythm, Via Natural or Artificial Opening Endoscopic, 4A02XFZ — Measurement of Cardiac Rhythm, External Approach

Same operation — other Function / Device

Same table and root operation, differing only in the function / device character.

4A0234Z — Measurement of Cardiac Electrical Activity, Percutaneous Approach, 4A0239Z — Measurement of Cardiac Output, Percutaneous Approach, 4A023CZ — Measurement of Cardiac Rate, Percutaneous Approach, 4A023HZ — Measurement of Cardiac Sound, Percutaneous Approach, 4A023PZ — Measurement of Cardiac Action Currents, Percutaneous Approach

Contextual Map

Every relationship of 4A023FZ in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run 4A023FZ with these 5 related codes in Claim Check

PCS table

• 4A0[PCS table]— CMS ICD-10-PCS tables
• Measurement and Monitoring — Section: Measurement and Monitoring[Section]: “Measurement and Monitoring”— CMS ICD-10-PCS tables
• Physiological Systems — Body System: Physiological Systems[Body System]: “Physiological Systems”— CMS ICD-10-PCS tables
• Measurement — Operation: Measurement[Operation]: “Measurement”— CMS ICD-10-PCS tables

MS-DRG participation

• DRG 212 — CONCOMITANT AORTIC AND MITRAL VALVE PROCEDURES[MS-DRG]: “CONCOMITANT AORTIC AND MITRAL VALVE PROCEDURES — Concomitant Aortic and Mitral Valve Procedures (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 216 — CARDIAC VALVE AND OTHER MAJOR CARDIOTHORACIC PROCEDURES WITH CARDIAC CATHETERIZATION WITH MCC[MS-DRG]— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 217 — CARDIAC VALVE AND OTHER MAJOR CARDIOTHORACIC PROCEDURES WITH CARDIAC CATHETERIZATION WITH CC[MS-DRG]— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 218 — CARDIAC VALVE AND OTHER MAJOR CARDIOTHORACIC PROCEDURES WITH CARDIAC CATHETERIZATION WITHOUT CC/MCC[MS-DRG]— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 273 — PERCUTANEOUS AND OTHER INTRACARDIAC PROCEDURES WITH MCC[MS-DRG]: “PERCUTANEOUS AND OTHER INTRACARDIAC PROCEDURES WITH MCC — Percutaneous and Other Intracardiac Procedures (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 274 — PERCUTANEOUS AND OTHER INTRACARDIAC PROCEDURES WITHOUT MCC[MS-DRG]: “PERCUTANEOUS AND OTHER INTRACARDIAC PROCEDURES WITHOUT MCC — Percutaneous and Other Intracardiac Procedures (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026

Clinical classification (CCSR)

• MAM009 — Electrophysiologic studies[CCSR category]: “Electrophysiologic studies — Measurement and Monitoring”— AHRQ CCSR for ICD-10-PCS Procedures (HCUP) · v2026.1

MDC crossing · diagnoses (1844)

• MDC 05 — Diseases and Disorders of the Circulatory System[MDC crossing]: “Diseases and Disorders of the Circulatory System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”— CMS MS-DRG Definitions Manual · FY2026
• A36.81 — Diphtheritic cardiomyopathy[Same-MDC diagnosis]: “Diphtheritic cardiomyopathy — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A39.50 — Meningococcal carditis, unspecified[Same-MDC diagnosis]: “Meningococcal carditis, unspecified — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A39.51 — Meningococcal endocarditis[Same-MDC diagnosis]: “Meningococcal endocarditis — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A39.52 — Meningococcal myocarditis[Same-MDC diagnosis]: “Meningococcal myocarditis — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A39.53 — Meningococcal pericarditis[Same-MDC diagnosis]: “Meningococcal pericarditis — grouped in MDC 05, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• and 1839 more

Nearest codes

• 4A020FZ — Measurement of Cardiac Rhythm, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 4A0234Z — Measurement of Cardiac Electrical Activity, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
• 4A0239Z — Measurement of Cardiac Output, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
• 4A023CZ — Measurement of Cardiac Rate, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
• 4A023HZ — Measurement of Cardiac Sound, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
• 4A023PZ — Measurement of Cardiac Action Currents, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
• 4A027FZ — Measurement of Cardiac Rhythm, Via Natural or Artificial Opening[One axis away]— CMS ICD-10-PCS tables
• 4A028FZ — Measurement of Cardiac Rhythm, Via Natural or Artificial Opening Endoscopic[One axis away]— CMS ICD-10-PCS tables