Vascular syndromes of brain in cerebrovascular diseases
In Episodic and paroxysmal disorders (G40-G47), chapter 6: Diseases of the Nervous System
9 billable codes under G46: 3 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Instructional notes
Code first: code the underlying condition first, then this code
- underlying cerebrovascular disease (I60-I69)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers default dominant or nondominant side for hemiplegia and monoplegia, and use and sequencing of G89 pain codes, including postoperative, chronic, and neoplasm-related pain.
- Dominant/nondominant side (page 45)
- Pain - Category G89 (page 45)
All codes under G46
G46 can't be used on a claim. Pick a billable code below; grey headings group them.
- G46.0Middle cerebral artery syndrome
- G46.1Anterior cerebral artery syndrome
- G46.2Posterior cerebral artery syndrome
- G46.3Brain stem stroke syndrome
- G46.4Cerebellar stroke syndrome
- G46.5Pure motor lacunar syndrome
- G46.6Pure sensory lacunar syndrome
- G46.7Other lacunar syndromes
- G46.8Other vascular syndromes of brain in cerebrovascular diseases
G46 MS-DRGs
As the principal diagnosis, the billable codes under G46 group to these 7 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 070 Other Cerebrovascular Disorders with MCC (6 of 9 codes)
- DRG 071 Other Cerebrovascular Disorders with CC (6 of 9 codes)
- DRG 072 Other Cerebrovascular Disorders without CC/MCC (6 of 9 codes)
- DRG 061 Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with MCC (3 of 9 codes)
- DRG 062 Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with CC (3 of 9 codes)
- DRG 063 Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent without CC/MCC (3 of 9 codes)
- DRG 069 Transient Ischemia without Thrombolytic (3 of 9 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Brain Diseases
Your brain is the control center of your body. It controls your thoughts, memory, speech, and movement. It regulates the function of many organs. It's part of your nervous system, which also includes your spinal cord and peripheral nerves. The nervous system sends signals between your brain and the rest of the body. Your nerves take in information from your senses and send it to the brain to be processed. Your brain and nerves also communicate to help you move and to control your body's functions.
Read more about brain diseases on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.