ICD-10-CM 2027
ICD-10 code for brain necrosis
From the official ICD-10-CM alphabetic index entry “Necrosis, necrotic (ischemic) › brain”. Page updated September 29, 2026.
About coding brain necrosis
The ICD-10-CM code for brain necrosis is I67.89 (Other cerebrovascular disease).
Within I67.8, choose I67.89 (Other cerebrovascular disease) only when documentation doesn't support a more specific option: acute cerebrovascular insufficiency (I67.81), cerebral ischemia (I67.82), posterior reversible encephalopathy syndrome (I67.83), cerebral vasospasm and vasoconstriction (I67.84) and hereditary cerebrovascular diseases (I67.85).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 061 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with MCC, relative weight 2.7211), DRG 062 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with CC, relative weight 1.7781), DRG 063 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent without CC/MCC, relative weight 1.455) and DRG 069 (Transient Ischemia without Thrombolytic, relative weight 0.7964), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about brain necrosis ICD-10 codes
What is the ICD-10 code for brain necrosis?
- I67.89 — Other cerebrovascular disease.
Is I67.89 billable?
- Yes. I67.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I67.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I67.89 as a principal diagnosis.
Is I67.89 a CC or MCC?
- I67.89 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.