021W4ZA

Potential MS-DRG Relationships (FY2026)

The MS-DRG grouper treats this as an operating room procedure. It appears in the surgical logic of 12 MS-DRGs:

• MDC 01 — Extracranial Procedures: DRG 037, DRG 038, DRG 039
• MDC 05 — Other Major Cardiovascular Procedures: DRG 270, DRG 271, DRG 272
• MDC 21 — Other O.R. Procedures for Injuries: DRG 907, DRG 908, DRG 909
• MDC 24 — Other O.R. Procedures for Multiple Significant Trauma: DRG 957, DRG 958, DRG 959

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.

021P4ZA — Bypass Pulmonary Trunk from Innominate Artery with No Device, Percutaneous Endoscopic Approach, 021Q4ZA — Bypass Right Pulmonary Artery from Innominate Artery with No Device, Percutaneous Endoscopic Approach, 021R4ZA — Bypass Left Pulmonary Artery from Innominate Artery with No Device, Percutaneous Endoscopic Approach, 021X4ZA — Bypass Thoracic Aorta, Ascending/Arch to Innominate Artery, Percutaneous Endoscopic Approach

Same operation — other Approach

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

021W0ZA — Bypass Thoracic Aorta, Descending to Innominate Artery, Open Approach

Same operation — other Device

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

021W48A — Bypass Thoracic Aorta, Descending to Innominate Artery with Zooplastic Tissue, Percutaneous Endoscopic Approach, 021W49A — Bypass Thoracic Aorta, Descending to Innominate Artery with Autologous Venous Tissue, Percutaneous Endoscopic Approach, 021W4AA — Bypass Thoracic Aorta, Descending to Innominate Artery with Autologous Arterial Tissue, Percutaneous Endoscopic Approach, 021W4JA — Bypass Thoracic Aorta, Descending to Innominate Artery with Synthetic Substitute, Percutaneous Endoscopic Approach, 021W4KA — Bypass Thoracic Aorta, Descending to Innominate Artery with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach

Same operation — other Qualifier

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

021W4ZB — Bypass Thoracic Aorta, Descending to Subclavian, Percutaneous Endoscopic Approach, 021W4ZD — Bypass Thoracic Aorta, Descending to Carotid, Percutaneous Endoscopic Approach, 021W4ZP — Bypass Thoracic Aorta, Descending to Pulmonary Trunk, Percutaneous Endoscopic Approach, 021W4ZQ — Bypass Thoracic Aorta, Descending to Right Pulmonary Artery, Percutaneous Endoscopic Approach, 021W4ZR — Bypass Thoracic Aorta, Descending to Left Pulmonary Artery, Percutaneous Endoscopic Approach

Contextual Map

Every relationship of 021W4ZA 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

• 021[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 (12)

• DRG 037 — EXTRACRANIAL PROCEDURES WITH MCC [MS-DRG]: “EXTRACRANIAL PROCEDURES WITH MCC — Extracranial Procedures (MDC 01)”
• DRG 038 — EXTRACRANIAL PROCEDURES WITH CC [MS-DRG]: “EXTRACRANIAL PROCEDURES WITH CC — Extracranial Procedures (MDC 01)”
• DRG 039 — EXTRACRANIAL PROCEDURES WITHOUT CC/MCC [MS-DRG]: “EXTRACRANIAL PROCEDURES WITHOUT CC/MCC — Extracranial Procedures (MDC 01)”
• 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)”
• and 4 more

MDC crossing · diagnoses (10874)

• MDC 01 — Diseases and Disorders of the Nervous System [MDC crossing]: “Diseases and Disorders of the Nervous 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 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.”
• A02.21 — Salmonella meningitis [Same-MDC diagnosis]: “Salmonella meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
• A06.6 — Amebic brain abscess [Same-MDC diagnosis]: “Amebic brain abscess — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
• A17.0 — Tuberculous meningitis [Same-MDC diagnosis]: “Tuberculous meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
• A17.1 — Meningeal tuberculoma [Same-MDC diagnosis]: “Meningeal tuberculoma — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
• A17.81 — Tuberculoma of brain and spinal cord [Same-MDC diagnosis]: “Tuberculoma of brain and spinal cord — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
• and 10869 more

Nearest codes

• 021P4ZA — Bypass Pulmonary Trunk from Innominate Artery with No Device, Percutaneous Endoscopic Approach [One axis away]
• 021Q4ZA — Bypass Right Pulmonary Artery from Innominate Artery with No Device, Percutaneous Endoscopic Approach [One axis away]
• 021R4ZA — Bypass Left Pulmonary Artery from Innominate Artery with No Device, Percutaneous Endoscopic Approach [One axis away]
• 021W0ZA — Bypass Thoracic Aorta, Descending to Innominate Artery, Open Approach [One axis away]
• 021W48A — Bypass Thoracic Aorta, Descending to Innominate Artery with Zooplastic Tissue, Percutaneous Endoscopic Approach [One axis away]
• 021W49A — Bypass Thoracic Aorta, Descending to Innominate Artery with Autologous Venous Tissue, Percutaneous Endoscopic Approach [One axis away]
• 021W4AA — Bypass Thoracic Aorta, Descending to Innominate Artery with Autologous Arterial Tissue, Percutaneous Endoscopic Approach [One axis away]
• 021W4JA — Bypass Thoracic Aorta, Descending to Innominate Artery with Synthetic Substitute, Percutaneous Endoscopic Approach [One axis away]