MS-DRG 67 – Precerebral Occlusion without Infarction with MCC
A Medical DRG in MDC 01 (Diseases & Disorders of the Nervous System). Inpatient cases group to DRG 67 when the ICD-10-CM principal diagnosis is one of the 26 codes listed below and a secondary diagnosis on the major complication or comorbidity (MCC) list is present. Its FY 2026 relative weight is 1.4687 with a geometric mean length of stay of 3.4 days.
Severity family
The grouper first assigns the case to MDC 01 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here), then applies the severity split from secondary diagnoses: with MCC → 67; without MCC → 68.
Principal Diagnosis Codes 26 codes · 2 categories
I65 Occlusion and stenosis of precerebral arteries, not resulting in cerebral infarction11 codes
- I65.01 Occlusion and stenosis of right vertebral artery
- I65.02 Occlusion and stenosis of left vertebral artery
- I65.03 Occlusion and stenosis of bilateral vertebral arteries
- I65.09 Occlusion and stenosis of unspecified vertebral artery
- I65.1 Occlusion and stenosis of basilar artery
- I65.21 Occlusion and stenosis of right carotid artery
- I65.22 Occlusion and stenosis of left carotid artery
- I65.23 Occlusion and stenosis of bilateral carotid arteries
- I65.29 Occlusion and stenosis of unspecified carotid artery
- I65.8 Occlusion and stenosis of other precerebral arteries
- I65.9 Occlusion and stenosis of unspecified precerebral artery
I66 Occlusion and stenosis of cerebral arteries, not resulting in cerebral infarction15 codes
- I66.01 Occlusion and stenosis of right middle cerebral artery
- I66.02 Occlusion and stenosis of left middle cerebral artery
- I66.03 Occlusion and stenosis of bilateral middle cerebral arteries
- I66.09 Occlusion and stenosis of unspecified middle cerebral artery
- I66.11 Occlusion and stenosis of right anterior cerebral artery
- I66.12 Occlusion and stenosis of left anterior cerebral artery
- I66.13 Occlusion and stenosis of bilateral anterior cerebral arteries
- I66.19 Occlusion and stenosis of unspecified anterior cerebral artery
- I66.21 Occlusion and stenosis of right posterior cerebral artery
- I66.22 Occlusion and stenosis of left posterior cerebral artery
- I66.23 Occlusion and stenosis of bilateral posterior cerebral arteries
- I66.29 Occlusion and stenosis of unspecified posterior cerebral artery
- I66.3 Occlusion and stenosis of cerebellar arteries
- I66.8 Occlusion and stenosis of other cerebral arteries
- I66.9 Occlusion and stenosis of unspecified cerebral artery
Procedure Codes
Frequently Asked Questions
What is MS-DRG 67?
MS-DRG 67 (Precerebral Occlusion without Infarction with MCC) is a medical DRG in MDC 01 (Diseases & Disorders of the Nervous System). Its FY 2026 relative weight is 1.4687 with a geometric mean length of stay of 3.4 days.
What is the difference between DRG 67, 68?
All 2 share the same base category; the severity of secondary diagnoses separates them: 67 (with MCC), 68 (without MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
How many diagnosis codes group to DRG 67?
26 ICD-10-CM principal diagnosis codes group to this DRG, spanning 2 three-character categories.
What is the relative weight of DRG 67?
The FY 2026 relative weight of this DRG is 1.4687, meaning reimbursement of roughly 1.47 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
