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Inpatient Procedure Code

027L4ZZ

Dilation of Left Ventricle, Percutaneous Endoscopic Approach

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
Section0

Medical and Surgical

2
Body System2

Heart and Great Vessels

3
Root Operation7

Dilation

Expanding an orifice or the lumen of a tubular body part

4
Body PartL

Ventricle, Left

5
Approach4

Percutaneous Endoscopic

6
DeviceZ

No Device

7
QualifierZ

No Qualifier

Potential MS-DRG Relationships (FY2026)

The MS-DRG grouper treats this as an 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 Part

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

027G4ZZ — Dilation of Mitral Valve, Percutaneous Endoscopic Approach, 027H4ZZ — Dilation of Pulmonary Valve, Percutaneous Endoscopic Approach, 027J4ZZ — Dilation of Tricuspid Valve, Percutaneous Endoscopic Approach, 027K4ZZ — Dilation of Right Ventricle, Percutaneous Endoscopic Approach, 027P4ZZ — Dilation of Pulmonary Trunk, Percutaneous Endoscopic Approach, 027Q4ZZ — Dilation of Right Pulmonary Artery, Percutaneous Endoscopic Approach, 027R4ZZ — Dilation of Left Pulmonary Artery, Percutaneous Endoscopic Approach, 027S4ZZ — Dilation of Right Pulmonary Vein, Percutaneous Endoscopic Approach, +9 more

Same operation — other Approach

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

027L0ZZ — Dilation of Left Ventricle, Open Approach, 027L3ZZ — Dilation of Left Ventricle, Percutaneous Approach

Same operation — other Device

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

027L44Z — Dilation of Left Ventricle with Drug-eluting Intraluminal Device, Percutaneous Endoscopic Approach, 027L4DZ — Dilation of Left Ventricle with Intraluminal Device, Percutaneous Endoscopic Approach

Contextual Map

Every relationship of 027L4ZZ 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.

PCS table

  • 027[PCS table]
  • [object Object] — Section: [object Object] [Section]: “[object Object]”
  • [object Object] — Body System: [object Object] [Body System]: “[object Object]”
  • [object Object] — Operation: [object Object] [Operation]: “[object Object]”

MS-DRG participation

  • DRG 270 — OTHER MAJOR CARDIOVASCULAR PROCEDURES WITH MCC [MS-DRG]: “OTHER MAJOR CARDIOVASCULAR PROCEDURES WITH MCC — Other Major Cardiovascular Procedures (MDC 05)”
  • DRG 271 — OTHER MAJOR CARDIOVASCULAR PROCEDURES WITH CC [MS-DRG]: “OTHER MAJOR CARDIOVASCULAR PROCEDURES WITH CC — Other Major Cardiovascular Procedures (MDC 05)”
  • DRG 272 — OTHER MAJOR CARDIOVASCULAR PROCEDURES WITHOUT CC/MCC [MS-DRG]: “OTHER MAJOR CARDIOVASCULAR PROCEDURES WITHOUT CC/MCC — Other Major Cardiovascular Procedures (MDC 05)”
  • DRG 907 — OTHER O.R. PROCEDURES FOR INJURIES WITH MCC [MS-DRG]: “OTHER O.R. PROCEDURES FOR INJURIES WITH MCC — Other O.R. Procedures for Injuries (MDC 21)”
  • DRG 908 — OTHER O.R. PROCEDURES FOR INJURIES WITH CC [MS-DRG]: “OTHER O.R. PROCEDURES FOR INJURIES WITH CC — Other O.R. Procedures for Injuries (MDC 21)”
  • DRG 909 — OTHER O.R. PROCEDURES FOR INJURIES WITHOUT CC/MCC [MS-DRG]: “OTHER O.R. PROCEDURES FOR INJURIES WITHOUT CC/MCC — Other O.R. Procedures for Injuries (MDC 21)”

MDC crossing · diagnoses (8238)

  • 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.”
  • MDC 21 — Injuries, Poisonings and Toxic Effects of Drugs [MDC crossing]: “Injuries, Poisonings and Toxic Effects of Drugs — 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.”
  • A36.81 — Diphtheritic cardiomyopathy [Same-MDC diagnosis]: “Diphtheritic cardiomyopathy — grouped in MDC 05, the diagnosis side of this code's crossing.” · check together
  • A39.50 — Meningococcal carditis, unspecified [Same-MDC diagnosis]: “Meningococcal carditis, unspecified — grouped in MDC 05, the diagnosis side of this code's crossing.” · check together
  • A39.51 — Meningococcal endocarditis [Same-MDC diagnosis]: “Meningococcal endocarditis — grouped in MDC 05, the diagnosis side of this code's crossing.” · check together
  • A39.52 — Meningococcal myocarditis [Same-MDC diagnosis]: “Meningococcal myocarditis — grouped in MDC 05, the diagnosis side of this code's crossing.” · check together
  • A39.53 — Meningococcal pericarditis [Same-MDC diagnosis]: “Meningococcal pericarditis — grouped in MDC 05, the diagnosis side of this code's crossing.” · check together
  • and 8233 more

Nearest codes

  • 02704ZZ — Dilation of Coronary Artery, One Artery, Percutaneous Endoscopic Approach [One axis away]
  • 02714ZZ — Dilation of Coronary Artery, Two Arteries, Percutaneous Endoscopic Approach [One axis away]
  • 02724ZZ — Dilation of Coronary Artery, Three Arteries, Percutaneous Endoscopic Approach [One axis away]
  • 02734ZZ — Dilation of Coronary Artery, Four or More Arteries, Percutaneous Endoscopic Approach [One axis away]
  • 027F4ZZ — Dilation of Aortic Valve, Percutaneous Endoscopic Approach [One axis away]
  • 027G4ZZ — Dilation of Mitral Valve, Percutaneous Endoscopic Approach [One axis away]
  • 027H4ZZ — Dilation of Pulmonary Valve, Percutaneous Endoscopic Approach [One axis away]
  • 027J4ZZ — Dilation of Tricuspid Valve, Percutaneous Endoscopic Approach [One axis away]

Change history

No changes recorded for this code — unchanged since the FY2026 (April) baseline of the change ledger.