2020 ICD-10-CM Diagnosis Code I10

Essential (primary) hypertension

    2016 2017 2018 2019 2020 Billable/Specific Code Questionable As Admission Dx
  • I10 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM I10 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of I10 - other international versions of ICD-10 I10 may differ.
ICD-10-CM Coding Rules
  • I10 is not usually sufficient justification for admission to an acute care hospital when used a principal diagnosis.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I10. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • hypertensive disease complicating pregnancy, childbirth and the puerperium (
    ICD-10-CM Diagnosis Code O10

    Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium
    Type 2 Excludes
    • pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)
    O10
    -
    ICD-10-CM Diagnosis Code O11

    Pre-existing hypertension with pre-eclampsia

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • conditions in Ol0 complicated by pre-eclampsia
    • pre-eclampsia superimposed pre-existing hypertension
    Use Additional
    • code from O10 to identify the type of hypertension
    O11
    ,
    ICD-10-CM Diagnosis Code O13

    Gestational [pregnancy-induced] hypertension without significant proteinuria

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • gestational hypertension NOS
    • transient hypertension of pregnancy
    O13
    -
    ICD-10-CM Diagnosis Code O16

    Unspecified maternal hypertension

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    O16
    )
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (I10) and the excluded code together.
  • essential (primary) hypertension involving vessels of brain (I60-I69
    ICD-10-CM Range I60-I69

    Cerebrovascular diseases

    Type 1 Excludes
    • traumatic intracranial hemorrhage (S06.-)
    Use Additional
    • code to identify presence of:
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • history of tobacco dependence (Z87.891)
    • hypertension (I10-I16)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
    • I60 Nontraumatic subarachnoid hemorrhage
    • I61 Nontraumatic intracerebral hemorrhage
    • I62 Other and unspecified nontraumatic intra...
    • I63 Cerebral infarction
    • I65 Occlusion and stenosis of precerebral ar...
    • I66 Occlusion and stenosis of cerebral arter...
    • I67 Other cerebrovascular diseases
    • I68 Cerebrovascular disorders in diseases cl...
    • I69 Sequelae of cerebrovascular disease
    )
  • essential (primary) hypertension involving vessels of eye (
    ICD-10-CM Diagnosis Code H35.0

    Background retinopathy and retinal vascular changes

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • any associated hypertension (I10.-)
    H35.0-
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • high blood pressure
  • hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
The following code(s) above I10 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I10:
  • I00-I99
    2020 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • transient cerebral ischemic attacks and related syndromes (G45.-)
    Diseases of the circulatory system
  • I10-I16
    2020 ICD-10-CM Range I10-I16

    Hypertensive diseases

    Type 1 Excludes
    • neonatal hypertension (P29.2)
    • primary pulmonary hypertension (I27.0)
    Type 2 Excludes
    • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
    Use Additional
    • code to identify:
    • exposure to environmental tobacco smoke (Z77.22)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
    Hypertensive diseases
Approximate Synonyms
  • Benign essential hypertension
  • Benign essential hypertension (htn)
  • Benign hypertension
  • Bilateral hypertensive retinopathy
  • Essential hypertension
  • Essential hypertension (high blood pressure)
  • Hypertension
  • Hypertension (high blood pressure)
  • Hypertension, uncontrolled
  • Hypertensive disorder
  • Hypertensive emergency
  • Hypertensive retinopathy, both eyes
  • Hypertensive urgency
  • Labile systemic arterial hypertension
  • Left hypertensive retinopathy
  • Left hypertensive retinopathy (eye condition)
  • Malignant hypertension
  • Nutritional therapy for hypertension
  • Nutritional therapy for hypertension done
  • Right hypertensive retinopathy
  • Uncontrolled hypertension
  • White coat syndrome
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.
  • 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.
  • Hypertension occurring without preexisting renal disease or known organic cause.
  • 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.
ICD-10-CM I10 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 304 Hypertension with mcc
  • 305 Hypertension without mcc

Convert I10 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to I10:
  • Code Also: H35.0
    ICD-10-CM Diagnosis Code H35.0

    Background retinopathy and retinal vascular changes

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • any associated hypertension (I10.-)
  • Applicable To: O10.0
    ICD-10-CM Diagnosis Code O10.0

    Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Any condition in I10 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium

Diagnosis Index entries containing back-references to I10:

ICD-10-CM Codes Adjacent To I10
I08.8 Other rheumatic multiple valve diseases
I08.9 Rheumatic multiple valve disease, unspecified
I09 Other rheumatic heart diseases
I09.0 Rheumatic myocarditis
I09.1 Rheumatic diseases of endocardium, valve unspecified
I09.2 Chronic rheumatic pericarditis
I09.8 Other specified rheumatic heart diseases
I09.81 Rheumatic heart failure
I09.89 Other specified rheumatic heart diseases
I09.9 Rheumatic heart disease, unspecified
I10 Essential (primary) hypertension
I11 Hypertensive heart disease
I11.0 Hypertensive heart disease with heart failure
I11.9 Hypertensive heart disease without heart failure
I12 Hypertensive chronic kidney disease
I12.0 Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
I12.9 Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
I13 Hypertensive heart and chronic kidney disease
I13.0 Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
I13.1 Hypertensive heart and chronic kidney disease without heart failure
I13.10 …… with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.


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