ICD-10 Diagnosis Code I10

Essential (primary) hypertension

Diagnosis Code I10

ICD-10: I10
Short Description: Essential (primary) hypertension
Long Description: Essential (primary) hypertension
This is the 2017 version of the ICD-10-CM diagnosis code I10

Code Classification
  • Diseases of the circulatory system
    • Hypertensive diseases (I10-I16)
      • Essential (primary) hypertension (I10)

Information for Medical Professionals

Code Edits
The following edits are applicable to this code:
Questionable admission codes Additional informationCallout TooltipQuestionable admission codes
Some diagnoses are not usually sufficient justification for admission to an acute care hospital. For example, if a patient is given code R030 for elevated blood pressure reading, without diagnosis of hypertension, then the patient would have a questionable admission, since elevated blood pressure reading is not normally sufficient justification for admission to a hospital.

Diagnostic Related Groups
The diagnosis code I10 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Benign essential hypertension
  • Benign essential hypertension complicating pregnancy, childbirth and the puerperium - delivered with postnatal complication
  • Benign hypertension
  • Benign hypertension
  • Chronic hypertension in obstetric context
  • Complication of systemic hypertensive disorder
  • Diastolic hypertension
  • Diastolic hypertension
  • Essential hypertension
  • Essential hypertension in obstetric context
  • Good hypertension control
  • High-renin essential hypertension
  • Hypertension in the obstetric context
  • Hypertension with albuminuria
  • Hypertensive crisis
  • Hypertensive crisis
  • Hypertensive crisis
  • Hypertensive crisis
  • Hypertensive disorder, systemic arterial
  • Hypertensive emergency
  • Hypertensive emergency
  • Hypertensive episode
  • Hypertensive optic neuropathy
  • Hypertensive urgency
  • Intermittent hypertension
  • Intermittent hypertension
  • Labile diastolic hypertension
  • Labile essential hypertension
  • Low-renin essential hypertension
  • Malignant essential hypertension
  • Malignant hypertension
  • Rebound hypertension
  • Sustained diastolic hypertension
  • Systolic essential hypertension
  • Systolic hypertension
  • Transient hypertension

Index of Diseases and Injuries
References found for the code I10 in the Index of Diseases and Injuries:

Replaced Code Additional informationCallout TooltipReplaced Code
The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2016. This codes was replaced for the FY 2017 (October 1, 2016-September 30, 2017).

This code was replaced in the 2017 ICD-10 code set with the code(s) listed below.
  • I16.0 - Hypertensive urgency
  • I16.1 - Hypertensive emergency
  • I16.9 - Hypertensive crisis, unspecified

Information for Patients

High Blood Pressure

Also called: Benign essential hypertension, Essential hypertension, HBP, HTN, Hypertension

Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps 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 called diastolic pressure.

Your blood pressure reading uses these two numbers. Usually the systolic number comes before or above the diastolic number. A reading of

  • 119/79 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 called prehypertension. Prehypertension means you may end up with high blood pressure, unless you take steps to prevent it.

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 such as exercise and the DASH diet and taking medicines, if needed.

NIH: National Heart, Lung, and Blood Institute

  • ACE inhibitors
  • Blood pressure measurement
  • Blood pressure monitors for home
  • Controlling your high blood pressure
  • Drug-induced hypertension
  • High blood pressure
  • High blood pressure and eye disease
  • High blood pressure medications
  • Hypertensive heart disease
  • Low-salt diet
  • Malignant hypertension
  • Renovascular hypertension
  • Talk with Your Health Care Provider about High Blood Pressure (Agency for Healthcare Research and Quality)

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