031T0ZGBypass Left Temporal Artery to Intracranial Artery, Open Approach

031T0ZG is the ICD-10-PCS code for a bypass procedure on the left temporal artery using an open approach (qualifier: intracranial artery). In ICD-10-PCS, bypass means altering the route of passage of the contents of a tubular body part.

In plain terms, this corresponds to Extracranial-intracranial (EC-IC) vascular bypass, the ICD-9-CM procedure title it maps to (39.28).

For a different body part, codes include 031G0ZG (intracranial artery), 031H0ZG (right common carotid artery), 031J0ZG (left common carotid artery) and 031S0ZG (right temporal artery).

With a different device, use 031T09G (autologous venous tissue), 031T0AG (autologous arterial tissue), 031T0JG (synthetic substitute) and 031T0KG (nonautologous tissue substitute).

It is an operating-room procedure in the MS-DRG logic for DRG 020 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with MCC), DRG 021 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with CC), DRG 022 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage without CC/MCC), DRG 023 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator), DRG 024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC) and DRG 025 (Craniotomy and Endovascular Intracranial Procedures with MCC), under the surgical categories “Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage”, “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis”, “Craniotomy and endovascular intracranial procedures” and 2 more.

It has been valid since ICD-10-PCS took effect on October 1, 2015.