MS-DRG 70 – Other Cerebrovascular Disorders with MCC
A Medical DRG in MDC 01 (Diseases & Disorders of the Nervous System). Inpatient cases group to DRG 70 when the ICD-10-CM principal diagnosis is one of the 34 codes listed below and a secondary diagnosis on the major complication or comorbidity (MCC) list is present. Its FY 2026 relative weight is 1.6648 with a geometric mean length of stay of 4.5 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 → 70; with CC → 71; without CC/MCC → 72.
Principal Diagnosis Codes 34 codes · 9 categories
G32 Other degenerative disorders of nervous system in diseases classified elsewhere1 code
- G32.89 Other specified degenerative disorders of nervous system in diseases classified elsewhere
G45 Transient cerebral ischemic attacks and related syndromes1 code
- G45.4 Transient global amnesia
G46 Vascular syndromes of brain in cerebrovascular diseases6 codes
G93 Other disorders of brain10 codes
- G93.40 Encephalopathy, unspecified
- G93.41 Metabolic encephalopathy
- G93.42 Megalencephalic leukoencephalopathy with subcortical cysts
- G93.43 Leukoencephalopathy with calcifications and cysts
- G93.44 Adult-onset leukodystrophy with axonal spheroids
- G93.45 Developmental and epileptic encephalopathy
- G93.49 Other encephalopathy
- G93.81 Temporal sclerosis
- G93.89 Other specified disorders of brain
- G93.9 Disorder of brain, unspecified
G96 Other disorders of central nervous system5 codes
G98 Other disorders of nervous system not elsewhere classified2 codes
G99 Other disorders of nervous system in diseases classified elsewhere1 code
- G99.8 Other specified disorders of nervous system in diseases classified elsewhere
I67 Other cerebrovascular diseases6 codes
- I67.2 Cerebral atherosclerosis
- I67.4 Hypertensive encephalopathy
- I67.83 Posterior reversible encephalopathy syndrome
- I67.850 Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy
- I67.858 Other hereditary cerebrovascular disease
- I67.9 Cerebrovascular disease, unspecified
Procedure Codes
Frequently Asked Questions
What is MS-DRG 70?
MS-DRG 70 (Other Cerebrovascular Disorders with MCC) is a medical DRG in MDC 01 (Diseases & Disorders of the Nervous System). Its FY 2026 relative weight is 1.6648 with a geometric mean length of stay of 4.5 days.
What is the difference between DRG 70, 71, 72?
All 3 share the same base category; the severity of secondary diagnoses separates them: 70 (with MCC), 71 (with CC), 72 (without CC/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 70?
34 ICD-10-CM principal diagnosis codes group to this DRG, spanning 9 three-character categories.
What is the relative weight of DRG 70?
The FY 2026 relative weight of this DRG is 1.6648, meaning reimbursement of roughly 1.66 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
