2027 ICD-10-CM Diagnosis Code I11.9Hypertensive heart disease without heart failure

ICD-10-CM Codes›I00–I99›I10-I1A›I11

ICD-10-CM I11.9
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I11.9 is a billable ICD-10-CM diagnosis code for hypertensive heart disease without heart failure. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 304 through 305. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Hypertension with complications and secondary hypertension.

I11.9 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 187 for payment year 2027.

This medical diagnosis code is frequently used in Cardiology medical specialties to designate conditions such heart failure.

Code Identity

ICD-10-CM Code
I11.9
Billable Status
Yes — Valid for Submission
Code Describes
Hypertensive heart disease without heart failure
Short Description
Hypertensive heart disease without heart failure
Same as the full description in the CMS dataset.
Parent Code
I11
Hypertensive heart disease

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI10-I1AHypertensive diseases
CategoryI11Hypertensive heart disease
This CodeI11.9Hypertensive heart disease without heart failure

Medicare Risk Adjustment (HCC)Billing

I11.9 does not risk-adjust for Medicare Advantage under the CMS-HCC V28 model, but it maps to payment categories in the other CMS models shown below.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
no payment category in the model that pays 100% of MA risk scores
Prior Model (CMS-HCC V24)
Not mapped under V24
this diagnosis newly risk-adjusts under the V28 model
Part D (RxHCC)
RxHCC 187 — Hypertension
also risk-adjusts in the Part D prescription drug model (V08)

Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Benign hypertensive heart disease
  • Benign hypertensive heart disease without congestive heart failure
  • Cardiomegaly
  • Cardiomegaly due to hypertension
  • Cardiomyopathy due to hypertension
  • Coronary sinus hypertension as complication of procedure
  • Hypertension complicating pregnancy, childbirth and the puerperium
  • Hypertensive heart disease
  • Hypertensive heart disease complicating AND/OR reason for care during childbirth
  • Hypertensive heart disease complicating AND/OR reason for care during pregnancy
  • Hypertensive heart disease in obstetric context
  • Hypertensive heart disease without congestive heart failure
  • Hypertensive left ventricular hypertrophy
  • Left ventricular hypertrophy
  • Malignant hypertensive heart disease
  • Malignant hypertensive heart disease without congestive heart failure
  • Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium
  • Pre-existing hypertensive heart disease in mother complicating childbirth
  • Pre-existing hypertensive heart disease in mother complicating pregnancy
  • Right ventricular hypertension

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I11.9: its own notes plus those printed at I11, block I10-I1A, and Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From I11 Hypertensive heart disease applies to 2 codes

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Hypertensive heart disease NOS

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block I10-I1A Hypertensive diseases applies to 18 codes
  • neonatal hypertension (P29.2)
  • primary pulmonary hypertension (I27.0)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block I10-I1A Hypertensive diseases applies to 18 codes
  • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • 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.-)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Block I10-I1A Hypertensive diseases applies to 18 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I11.9, its category, or a range that includes it.

Includes 1

These notes mention I11.9.

  • I13 Hypertensive heart and chronic kidney disease
    any condition in I11.- with any condition in I12.- names I11.-, which includes this code

Applicable To 1

These notes mention I11.9.

  • O10.1 Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium
    Any condition in I11 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium names I11, which includes this code

Excludes1 2

These codes carry an Excludes1 note naming I11.9: they are not reported together with it, unless the two conditions are unrelated.

  • I51.5 Myocardial degeneration
    myocardial degeneration due to hypertension (I11.-) names I11.-, which includes this code
  • I51.7 Cardiomegaly
    cardiomegaly due to hypertension (I11.-) names I11.-, which includes this code

Use Additional Code 3

These codes say to use an additional code from the note, and I11.9 is one of the codes named.

  • O10.1 Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium
    code from I11 to identify the type of hypertensive heart disease names I11, which includes this code
  • G31.84 Mild cognitive impairment of uncertain or unknown etiology
    hypertension (I10-I1A) names I10-I1A, which includes this code
  • Block I60-I69 Cerebrovascular diseases
    hypertension (I10-I1A) names I10-I1A, which includes this code

Code Also 5

These codes say I11.9 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • I67.4 Hypertensive encephalopathy
    hypertensive heart disease (I11.-) names I11.-, which includes this code
  • I87.2 Venous insufficiency (chronic) (peripheral)
    hypertensive heart disease (I11.-) names I11.-, which includes this code
  • I16 Hypertensive crisis
    any identified hypertensive disease (I10-I15, I1A) names I10-I15, which includes this code
  • Block I20-I25 Ischemic heart diseases
    the presence of hypertension (I10-I1A) names I10-I1A, which includes this code
  • Z15.3 Genetic susceptibility to kidney disease
    if applicable, hypertension (I10-I1A) names I10-I1A, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR008
Hypertension with complications and secondary hypertension
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Heart Diseases

Heart disease is a general term that includes many types of heart problems. It's a type of cardiovascular disease, which means heart and blood vessel disease.

The full article covers:

  • What is heart disease?
  • What are the types of heart disease?
  • What causes heart diseases?
  • Who is more likely to develop heart diseases?
  • What are the symptoms of heart disease?
  • How are heart diseases diagnosed?
  • What are the treatments for heart disease?
  • Can heart diseases be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert I11.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
402.00 Mal hyp ht dis w/o hf
Approximate The match is approximate rather than exact.
ICD-9-CM
402.10 Benign hyp ht dis w/o hf
Approximate The match is approximate rather than exact.
ICD-9-CM
402.90 Hyp hrt dis NOS w/o hf
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About I11.9Overview

What is the ICD-10 code for hypertensive heart disease without heart failure?

The ICD-10-CM code for hypertensive heart disease without heart failure is I11.9 (sometimes written as I119). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is I11.9 (Hypertensive heart disease) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report hypertensive heart disease without heart failure on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does I11.9 group to?

When hypertensive heart disease without heart failure is the principal diagnosis on an inpatient stay, it groups to MS-DRG 305, 304, with relative weights from 0.7579 to 1.2010 depending on complications. Higher weights mean higher Medicare reimbursement.

Can I11.9 be reported with P29.2?

Not as a rule. The Excludes1 note at block I10-I1A, which applies to I11.9, lists "neonatal hypertension (P29.2)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of I11.9?

Under the General Equivalence Mappings, hypertensive heart disease without heart failure converts to ICD-9-CM 402.00 (mal hyp ht dis w/o hf), 402.10 (benign hyp ht dis w/o hf), and 402.90 (hyp hrt dis NOS w/o hf). The mapping is approximate, so confirm the match fits the documentation.

Does I11.9 risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage: I11.9 maps to no category in the CMS-HCC V28 model. It still risk-adjusts in the RxHCC Part D (V08) category 187 (Hypertension).