Specific code 2015 ICD-9-CM Diagnosis Code 401.1
Benign essential hypertension
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015
  • Questionable As Admission Dx

  • ICD-9-CM 401.1 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 401.1 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 401.1 converts approximately to:
  • 2015/16 ICD-10-CM I10 Essential (primary) hypertension
Disease Synonyms
  • Benign essential HTN
  • Benign Essential hypertension (HTN)
  • Benign HTN
  • Benign hypertension
  • Essential htn, benign
  • Essential hypertension (high blood pressure)
ICD-9-CM Coding Information
  • 401.1 is not usually sufficient justification for admission to an acute care hospital when used a principal diagnosis.
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 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.