2027 ICD-10-CM Diagnosis Code I05Rheumatic mitral valve diseases

ICD-10-CM Codes›I00–I99›I05-I09›I05

ICD-10-CM I05
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I05 is a non-billable ICD-10-CM category code for rheumatic mitral valve diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I05.0, I05.1, I05.2, and I05.8.

Code Identity

ICD-10-CM Code
I05
Billable Status
No — Non-Billable Category
Code Describes
Rheumatic mitral valve diseases
Short Description
Rheumatic mitral valve diseases
Same as the full description in the CMS dataset.
Chapter
I05-I09
Chronic rheumatic heart diseases

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI05-I09Chronic rheumatic heart diseases
CategoryI05Rheumatic mitral valve diseases
This CodeI05Rheumatic mitral valve diseases

Specific Coding for Rheumatic mitral valve diseasesOverview

Non-specific codes like I05 require more characters. Use one of these billable codes instead:

  • Use I05.0 for Rheumatic mitral stenosis

  • Use I05.1 for Rheumatic mitral insufficiency

  • Use I05.2 for Rheumatic mitral stenosis with insufficiency

  • Use I05.8 for Other rheumatic mitral valve diseases

  • Use I05.9 for Rheumatic mitral valve disease, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I05: its own notes plus those printed at 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.

  • conditions classifiable to both I05.0 and I05.2-I05.9, whether specified as rheumatic or not

Excludes1

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

  • mitral valve disease specified as nonrheumatic (I34.-)
  • mitral valve disease with aortic and/or tricuspid valve involvement (I08.-)

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 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.-)

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I05, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming I05: they are not reported together with it, unless the two conditions are unrelated.

  • I01 Rheumatic fever with heart involvement
    chronic diseases of rheumatic origin (I05-I09) unless rheumatic fever is also present or there is evidence of reactivation or activity of the rheumatic process.
  • I34 Nonrheumatic mitral valve disorders
    mitral valve disorder specified as rheumatic (I05.-)

Excludes2 1

These codes carry an Excludes2 note naming I05: its condition is not part of those codes, and both may be reported when the patient has both.

  • I51 Complications and ill-defined descriptions of heart disease
    heart disease specified as rheumatic (I00-I09) names I00-I09, which includes this code

Code Also 1

These codes say I05 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • I27.22 Pulmonary hypertension due to left heart disease
    rheumatic mitral valve diseases (I05.-)

Patient EducationClinical

Heart Valve Diseases

Heart valve disease happens when one or more of your heart valves don't work well.

The full article covers:

  • What are heart valve diseases?
  • What are the types of heart valve diseases?
  • What causes heart valve diseases?
  • Who is more likely to develop heart valve diseases?
  • What are the symptoms of heart valve diseases?
  • What other problems can heart valve diseases cause?
  • How is heart valve disease diagnosed?
  • What are the treatments for heart valve diseases?

Read the full article at MedlinePlus

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

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 I05Overview

What is the ICD-10 code for rheumatic mitral valve diseases?

I05 is the ICD-10-CM category for rheumatic mitral valve diseases, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is I05 (Rheumatic mitral valve diseases) a billable code?

No. This is a category header that groups the codes for rheumatic mitral valve diseases, and headers cannot be submitted on claims. Claims for rheumatic mitral valve diseases need a more specific code from this category, such as I05.0, I05.1, and I05.2.

Can I05 be reported with a code from I34?

Not as a rule. The Excludes1 note on I05 lists "mitral valve disease specified as nonrheumatic (I34.-)". 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).