031S0AG ICD-10-PCS Code: Bypass Right Temporal Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

The MS-DRG grouper treats this as an operating room procedure. It appears in the surgical logic of 14 MS-DRGs:

• MDC 01 — Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage: DRG 020, DRG 021, DRG 022
• MDC 01 — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis: DRG 023, DRG 024
• MDC 01 — Craniotomy and endovascular intracranial procedures: DRG 025, DRG 026, DRG 027
• 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.

031G0AG — Bypass Intracranial Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach, 031H0AG — Bypass Right Common Carotid Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach, 031J0AG — Bypass Left Common Carotid Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach, 031T0AG — Bypass Left Temporal Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach

Same operation — other Device

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

031S09G — Bypass Right Temporal Artery to Intracranial Artery with Autologous Venous Tissue, Open Approach, 031S0JG — Bypass Right Temporal Artery to Intracranial Artery with Synthetic Substitute, Open Approach, 031S0KG — Bypass Right Temporal Artery to Intracranial Artery with Nonautologous Tissue Substitute, Open Approach, 031S0ZG — Bypass Right Temporal Artery to Intracranial Artery, Open Approach

Same procedure category (CCSR), other tables

AHRQ's Clinical Classifications Software Refined groups these ICD-10-PCS procedures with this one under Peripheral arterial bypass procedures (Cardiovascular Procedures); listed here are the members in other PCS tables. Source: Clinical Classifications Software Refined (CCSR), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, November 2025.

+1464 more

Contextual Map

Every relationship of 031S0AG 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 031S0AG with these 5 related codes in Claim Check

PCS table

• 031[PCS table]— CMS ICD-10-PCS tables
• Medical and Surgical — Section: Medical and Surgical[Section]: “Medical and Surgical”— CMS ICD-10-PCS tables
• Upper Arteries — Body System: Upper Arteries[Body System]: “Upper Arteries”— CMS ICD-10-PCS tables
• Bypass — Operation: Bypass[Operation]: “Bypass”— CMS ICD-10-PCS tables

MS-DRG participation (14)

• DRG 020 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH MCC[MS-DRG]: “INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH MCC — Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 021 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH CC[MS-DRG]: “INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITH CC — Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 022 — INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITHOUT CC/MCC[MS-DRG]: “INTRACRANIAL VASCULAR PROCEDURES WITH PRINCIPAL DIAGNOSIS HEMORRHAGE WITHOUT CC/MCC — Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 023 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR[MS-DRG]: “CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 024 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC[MS-DRG]: “CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 025 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH MCC[MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH MCC — Craniotomy and endovascular intracranial procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 026 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC[MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC — Craniotomy and endovascular intracranial procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 027 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITHOUT CC/MCC[MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITHOUT CC/MCC — Craniotomy and endovascular intracranial procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• and 6 more

Clinical classification (CCSR)

• CAR014 — Peripheral arterial bypass procedures[CCSR category]: “Peripheral arterial bypass procedures — Cardiovascular Procedures”— AHRQ CCSR for ICD-10-PCS Procedures (HCUP) · v2026.1

MDC crossing · diagnoses (2636)

• 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.”— CMS MS-DRG Definitions Manual · FY2026
• A02.21 — Salmonella meningitis[Same-MDC diagnosis]: “Salmonella meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A06.6 — Amebic brain abscess[Same-MDC diagnosis]: “Amebic brain abscess — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A17.0 — Tuberculous meningitis[Same-MDC diagnosis]: “Tuberculous meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A17.1 — Meningeal tuberculoma[Same-MDC diagnosis]: “Meningeal tuberculoma — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• 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.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• and 2631 more

Nearest codes

• 031G0AG — Bypass Intracranial Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 031H0AG — Bypass Right Common Carotid Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 031J0AG — Bypass Left Common Carotid Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 031S09G — Bypass Right Temporal Artery to Intracranial Artery with Autologous Venous Tissue, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 031S0JG — Bypass Right Temporal Artery to Intracranial Artery with Synthetic Substitute, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 031S0KG — Bypass Right Temporal Artery to Intracranial Artery with Nonautologous Tissue Substitute, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 031S0ZG — Bypass Right Temporal Artery to Intracranial Artery, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 031T0AG — Bypass Left Temporal Artery to Intracranial Artery with Autologous Arterial Tissue, Open Approach[One axis away]— CMS ICD-10-PCS tables