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Inpatient Procedure Code

4A028FZ ICD-10-PCS Code: Measurement of Cardiac Rhythm, Via Natural or Artificial Opening Endoscopic

Measurement of Cardiac Rhythm, Endo

Axis Breakdown

Every ICD-10-PCS code is exactly seven characters, one per axis. Each character's meaning is defined by its position in the code.

PositionValueMeaning
1
Section4

Measurement and Monitoring

2
Body SystemA

Physiological Systems

3
Root Operation0

Measurement

Determining the level of a physiological or physical function at a point in time

4
Body System2

Cardiac

5
Approach8

Via Natural or Artificial Opening Endoscopic

6
Function / DeviceF

Rhythm

7
QualifierZ

No Qualifier

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:

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

Related Codes

Same operation — other Body System

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

4A0H8FZ — Measurement of Products of Conception, Cardiac Rhythm, Via Natural or Artificial Opening Endoscopic

Same operation — other Approach

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

4A020FZ — Measurement of Cardiac Rhythm, Open Approach, 4A023FZ — Measurement of Cardiac Rhythm, Percutaneous Approach, 4A027FZ — Measurement of Cardiac Rhythm, Via Natural or Artificial Opening, 4A02XFZ — Measurement of Cardiac Rhythm, External Approach

Same operation — other Function / Device

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

4A0284Z — Measurement of Cardiac Electrical Activity, Via Natural or Artificial Opening Endoscopic, 4A0289Z — Measurement of Cardiac Output, Via Natural or Artificial Opening Endoscopic, 4A028CZ — Measurement of Cardiac Rate, Via Natural or Artificial Opening Endoscopic, 4A028HZ — Measurement of Cardiac Sound, Via Natural or Artificial Opening Endoscopic, 4A028PZ — Measurement of Cardiac Action Currents, Via Natural or Artificial Opening Endoscopic

Contextual Map

Every relationship of 4A028FZ 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 4A028FZ with these 5 related codes in Claim Check

PCS table

MS-DRG participation

Clinical classification (CCSR)

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

Change history

No changes recorded for this code. This ledger tracks additions, deletions and description changes from FY2026 (April) onward. Note changes are not tracked.

Read from: CMS ICD-10-PCS code tables, index and definitions — FY2026 (April); CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43; AHRQ HCUP Clinical Classifications Software Refined for ICD-10-PCS Procedures (hcup-us.ahrq.gov/toolssoftware/ccsr/PRCCSR_v2026-1.zip) — v2026.1. All data sources · How to read the labels