Specific code 2012 ICD-9-CM Diagnosis Code 458.9
Hypotension, unspecified
  • Short description: Hypotension NOS.
  • ICD-9-CM 458.9 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 458.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2012 version of ICD-9-CM 458.9.
  • More recent version(s) of ICD-9-CM 458.9: 2013 2014.
Disease Synonyms
  • Hypotension
  • Hypotension (low blood pressure)
  • Low blood pressure
Applies To
  • Hypotension (arterial) NOS
Convert to ICD-10-CM: 458.9 converts directly to:
  • 2014 ICD-10-CM I95.9 Hypotension, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 458.9:
  • Abnormal, abnormality, abnormalities - see also Anomaly
    • blood pressure
      • elevated (without diagnosis of hypertension) 796.2
      • low (see also Hypotension) 458.9
        • reading (incidental) (isolated) (nonspecific) 796.3
  • Blood
    • pressure
      • decreased, due to shock following injury 958.4
      • fluctuating 796.4
      • high (see also Hypertension) 401.9
        • borderline 796.2
        • incidental reading (isolated) (nonspecific), without diagnosis of hypertension 796.2
      • low (see also Hypotension) 458.9
        • incidental reading (isolated) (nonspecific), without diagnosis of hypotension 796.3
  • Constitutional - see also condition
    • arterial hypotension (see also Hypotension) 458.9
  • Hypotension (arterial) (constitutional) 458.9
    • maternal, syndrome (following labor and delivery) 669.2
    • orthostatic (chronic) 458.0
      • dysautonomic-dyskinetic syndrome 333.0
    • permanent idiopathic 458.1
  • Low
    • blood pressure (see also Hypotension) 458.9
      • reading (incidental) (isolated) (nonspecific) 796.3
  • Pressure
    • hyposystolic (see also Hypotension) 458.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 458.9 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.