Specific code 2011 ICD-9-CM Diagnosis Code 401.1
Benign essential hypertension
  • Short description: Benign hypertension.
  • ICD-9-CM 401.1 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 401.1 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2011 version of ICD-9-CM 401.1.
  • More recent version(s) of ICD-9-CM 401.1: 2012 2013 2014 2015.
Disease Synonyms
  • Benign essential HTN
  • Benign Essential hypertension (HTN)
  • Benign HTN
  • Benign hypertension
  • Essential htn, benign
  • Essential hypertension (high blood pressure)
Convert to ICD-10-CM: 401.1 converts approximately to:
  • 2015 ICD-10-CM I10 Essential (primary) hypertension
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 401.1 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 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.