CEREBROVASCULAR DISEASE (430-438)

• Includes: with mention of hypertension (conditions classifiable to 401-405)
• Use additional code to identify presence of hypertension
• Excludes: any condition classifiable to 430-434, 436, 437 occurring during pregnancy, childbirth, or the puerperium, or specified as puerperal (674.0)
• 430 Subarachnoid hemorrhage
  • Meningeal hemorrhage
  • Ruptured:
    • berry aneurysm
    • (congenital) cerebral aneurysm NOS
  • Excludes: syphilitic ruptured cerebral aneurysm (094.87)
• 431 Intracerebral hemorrhage
  • Hemorrhage (of):
    • basilar
    • bulbar
    • cerebellar
    • cerebral
    • cerebromeningeal
    • cortical
    • internal capsule
    • intrapontine
    • pontine
    • subcortical
    • ventricular
  • Rupture of blood vessel in brain
• 432 Other and unspecified intracranial hemorrhage
  • 432.0 Nontraumatic extradural hemorrhage
    • Nontraumatic epidural hemorrhage
  • 432.1 Subdural hemorrhage
    • Subdural hematoma, nontraumatic
  • 432.9 Unspecified intracranial hemorrhage
    • Intracranial hemorrhage NOS
• 433 Occlusion and stenosis of precerebral arteries
  • The following fifth-digit subclassification is for use with category 433:
    • 0 without mention of cerebral infarction
    • 1 with cerebral infarction
  • Includes: embolism of basilar, carotid, and vertebral arteries
    • narrowing of basilar, carotid, and vertebral arteries
    • obstruction of basilar, carotid, and vertebral arteries
    • thrombosis of basilar, carotid, and vertebral arteries
  • Excludes: insufficiency NOS of precerebral arteries (435.0-435.9)
  • 433.0 Basilar artery
  • 433.1 Carotid artery
  • 433.2 Vertebral artery
  • 433.3 Multiple and bilateral
  • 433.8 Other specified precerebral artery
  • 433.9 Unspecified precerebral artery
    • Precerebral artery NOS
• 434 Occlusion of cerebral arteries
  • The following fifth-digit subclassification is for use with category 434:
    • 0 without mention of cerebral infarction
    • 1 with cerebral infarction
  • 434.0 Cerebral thrombosis
    • Thrombosis of cerebral arteries
  • 434.1 Cerebral embolism
  • 434.9 Cerebral artery occlusion, unspecified
• 435 Transient cerebral ischemia
  • Includes: cerebrovascular insufficiency (acute) with transient focal neurological signs and symptoms
    • insufficiency of basilar, carotid, and vertebral arteries
    • spasm of cerebral arteries
  • Excludes: acute cerebrovascular insufficiency NOS (437.1)
    • that due to any condition classifiable to 433 (433.0-433.9)
  • 435.0 Basilar artery syndrome
  • 435.1 Vertebral artery syndrome
  • 435.2 Subclavian steal syndrome
  • 435.3 Vertebrobasilar artery syndrome
  • 435.8 Other specified transient cerebral ischemias
  • 435.9 Unspecified transient cerebral ischemia
    • Impending cerebrovascular accident
    • Intermittent cerebral ischemia
    • Transient ischemic attack [TIA]
• 436 Acute, but ill-defined, cerebrovascular disease
  • Apoplexy, apoplectic:
    • NOS
    • attack
    • cerebral
    • seizure
  • Cerebral seizure
  • Cerebrovascular accident [CVA] NOS
  • Stroke
  • Excludes: any condition classifiable to categories 430-435
• 437 Other and ill-defined cerebrovascular disease
  • 437.0 Cerebral atherosclerosis
    • Atheroma of cerebral arteries
    • Cerebral arteriosclerosis
  • 437.1 Other generalized ischemic cerebrovascular disease
    • Acute cerebrovascular insufficiency NOS
    • Cerebral ischemia (chronic)
  • 437.2 Hypertensive encephalopathy
  • 437.3 Cerebral aneurysm, nonruptured
  • 437.4 Cerebral arteritis
  • 437.5 Moyamoya disease
  • 437.6 Nonpyogenic thrombosis of intracranial venous sinus
    • Excludes: pyogenic (325)
  • 437.7 Transient global amnesia
  • 437.8 Other
  • 437.9 Unspecified
    • Cerebrovascular disease or lesion NOS
• 438 Late effects of cerebrovascular disease
  • Note: This category is to be used to indicate conditions in 430-437 as the cause of late effects, themselves classifiable elsewhere. The "late effects" include conditions specified as such, or as sequelae, which may occur at any time after the onset of the causal condition.
    • Code first sequelae:
      • aphasia (784.3)
      • dysphasia (784.5)
      • hemiplegia (342.0-342.9)
      • paralysis (344.0-344.9)