Specific code 2014 ICD-9-CM Diagnosis Code 437.2
Hypertensive encephalopathy
  • Billable Code
  • Short description: Hypertens encephalopathy.
  • ICD-9-CM 437.2 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 437.2 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Clinical Information
  • 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.
Convert to ICD-10-CM: 437.2 converts directly to:
  • 2014 ICD-10-CM I67.4 Hypertensive encephalopathy
ICD-9-CM Volume 2 Index entries containing back-references to 437.2:
  • Degeneration, degenerative
    • cerebrovascular 437.1
      • due to hypertension 437.2
      • late effect - see Late effect(s) (of) cerebrovascular disease
  • Encephalopathy (acute) 348.30
    • hypertensive 437.2
  • Lesion(s)
    • brain 348.89
      • congenital 742.9
      • vascular (see also Lesion, cerebrovascular) 437.9
        • degenerative 437.1
        • healed or old without residuals V12.54
        • hypertensive 437.2
        • late effect - see Late effect(s) (of) cerebrovascular disease
    • cerebrovascular (see also Disease, cerebrovascular NEC) 437.9
      • degenerative 437.1
      • healed or old without residuals V12.54
      • hypertensive 437.2
      • specified type NEC 437.8
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 437.2 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.