Specific code 2015 ICD-9-CM Diagnosis Code 997.91
Complications affecting other specified body systems, not elsewhere classified, hypertension
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 997.91 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 997.91 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: 997.91 converts directly to:
  • 2015/16 ICD-10-CM I97.3 Postprocedural hypertension
Approximate Synonyms
  • HTN complication after surgery
  • Hypertension complication after surgery
  • Hypertensive disorder, systemic arterial
  • Postoperative hypertension
Clinical Information
  • A blood pressure of 140/90 or higher. High blood pressure usually has no symptoms. It can harm the arteries and cause an increase in the risk of stroke, heart attack, kidney failure, and blindness
  • A disorder characterized by a pathological increase in blood pressure; a repeatedly elevation in the blood pressure exceeding 140 over 90 mm hg
  • Abnormally high blood pressure
  • Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps out blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls. This is the diastolic pressure. Your blood pressure reading uses these two numbers, the systolic and diastolic pressures. Usually they are written one above or before the other. A reading of
    • 120/80 or lower is normal blood pressure
    • 140/90 or higher is high blood pressure
    • between 120 and 139 for the top number, or between 80 and 89 for the bottom number is prehypertension
    high blood pressure usually has no symptoms, but it can cause serious problems such as stroke, heart failure, heart attack and kidney failure. You can control high blood pressure through healthy lifestyle habits and taking medicines, if needed
  • Pathological increase in blood pressure; a repeatedly elevated blood pressure exceeding 140 over 90 mmhg
  • Persistantly high arterial blood pressure
  • Persistently high systemic arterial blood pressure. Based on multiple readings (blood pressure determination), hypertension is currently defined as when systolic pressure is consistently greater than 140 mm hg or when diastolic pressure is consistently 90 mm hg or more
997.91 Excludes
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 997.91 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.