Inpatient Procedure Code
021P4AD
Bypass Pulmonary Trunk from Carotid with Autologous Arterial Tissue, Percutaneous Endoscopic Approach
Bypass Pulm Trunk from Carotid w Autol Art, Perc 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.
| Position | Value | Meaning |
|---|---|---|
| 1 | Section0 | Medical and Surgical |
| 2 | Body System2 | Heart and Great Vessels |
| 3 | Root Operation1 | Bypass Altering the route of passage of the contents of a tubular body part |
| 4 | Body PartP | Pulmonary Trunk |
| 5 | Approach4 | Percutaneous Endoscopic |
| 6 | DeviceA | Autologous Arterial Tissue |
| 7 | QualifierD | Carotid |
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 04 — Other Respiratory System O.R. Procedures: DRG 166, DRG 167, DRG 168
- MDC 05 — Other Vascular Procedures: DRG 252, DRG 253, DRG 254
- 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.
Contextual Map
Every relationship of 021P4AD 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 166 — OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH MCC [MS-DRG]: “OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH MCC — Other Respiratory System O.R. Procedures (MDC 04)”
- DRG 167 — OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH CC [MS-DRG]: “OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITH CC — Other Respiratory System O.R. Procedures (MDC 04)”
- DRG 168 — OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITHOUT CC/MCC [MS-DRG]: “OTHER RESPIRATORY SYSTEM O.R. PROCEDURES WITHOUT CC/MCC — Other Respiratory System O.R. Procedures (MDC 04)”
- DRG 252 — OTHER VASCULAR PROCEDURES WITH MCC [MS-DRG]: “OTHER VASCULAR PROCEDURES WITH MCC — Other Vascular Procedures (MDC 05)”
- DRG 253 — OTHER VASCULAR PROCEDURES WITH CC [MS-DRG]: “OTHER VASCULAR PROCEDURES WITH CC — Other Vascular Procedures (MDC 05)”
- DRG 254 — OTHER VASCULAR PROCEDURES WITHOUT CC/MCC [MS-DRG]: “OTHER VASCULAR PROCEDURES WITHOUT CC/MCC — Other Vascular 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 (8919)
- MDC 04 — Diseases and Disorders of the Respiratory System [MDC crossing]: “Diseases and Disorders of the Respiratory 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.”
- A02.22 — Salmonella pneumonia [Same-MDC diagnosis]: “Salmonella pneumonia — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
- A06.5 — Amebic lung abscess [Same-MDC diagnosis]: “Amebic lung abscess — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
- A15.0 — Tuberculosis of lung [Same-MDC diagnosis]: “Tuberculosis of lung — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
- A15.4 — Tuberculosis of intrathoracic lymph nodes [Same-MDC diagnosis]: “Tuberculosis of intrathoracic lymph nodes — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
- A15.5 — Tuberculosis of larynx, trachea and bronchus [Same-MDC diagnosis]: “Tuberculosis of larynx, trachea and bronchus — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
- and 8914 more
Nearest codes
- 021P0AD — Bypass Pulmonary Trunk from Carotid with Autologous Arterial Tissue, Open Approach [One axis away]
- 021P48D — Bypass Pulmonary Trunk from Carotid with Zooplastic Tissue, Percutaneous Endoscopic Approach [One axis away]
- 021P49D — Bypass Pulmonary Trunk from Carotid with Autologous Venous Tissue, Percutaneous Endoscopic Approach [One axis away]
- 021P4AA — Bypass Pulmonary Trunk from Innominate Artery with Autologous Arterial Tissue, Percutaneous Endoscopic Approach [One axis away]
- 021P4AB — Bypass Pulmonary Trunk from Subclavian with Autologous Arterial Tissue, Percutaneous Endoscopic Approach [One axis away]
- 021P4JD — Bypass Pulmonary Trunk from Carotid with Synthetic Substitute, Percutaneous Endoscopic Approach [One axis away]
- 021P4KD — Bypass Pulmonary Trunk from Carotid with Nonautologous Tissue Substitute, Percutaneous Endoscopic Approach [One axis away]
- 021P4ZD — Bypass Pulmonary Trunk from Carotid with No Device, Percutaneous Endoscopic Approach [One axis away]
Change history
No changes recorded for this code — unchanged since the FY2026 (April) baseline of the change ledger.