2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Cerebrovascular Disease 430-438 > Other And Ill-Defined Cerebrovascular Disease 437.* >  2008 ICD-9-CM Diagnosis 437.2
Hypertensive encephalopathy On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.
The 2009 version of ICD-9-CM 437.2 can be accessed here. - Brain dysfunction or damage resulting from sustained MALIGNANT HYPERTENSION. When BLOOD PRESSURE exceeds the limits of cerebral autoregulation, cerebral blood flow is impaired (BRAIN ISCHEMIA). Clinical manifestations include HEADACHE; NAUSEA; VOMITING; SEIZURES; altered mental status (in some cases progressing to COMA); PAPILLEDEMA; and RETINAL HEMORRHAGE.
- 437.2 is a specific code that can be used to specify a diagnosis
- 437.2 contains 6 index entries
- View the ICD-9-CM Volume 1 437.* hierarchy
Index entries containing 437.2:- Degeneration, degenerative
- cerebrovascular 437.1
- due to hypertension
 437.2
Encephalopathy (acute) 348.30- hypertensive 437.2
Hypertension, hypertensive (arterial) (arteriolar) (crisis) (degeneration) (disease) (essential) (fluctuating) (idiopathic) (intermittent) (labile) (low renin) (orthostatic) (paroxysmal) (primary) (systemic) (uncontrolled) (vascular) 401.0 401.1 401.9- cerebrovascular disease NEC 437.2 437.2 437.2
- encephalopathy 437.2 437.2 437.2
Lesion(s)- brain 348.8
- vascular (see also Lesion, cerebrovascular) 437.9
- hypertensive 437.2
- cerebrovascular (see also Disease, cerebrovascular NEC) 437.9
- hypertensive 437.2
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