U.S. ICD-10-CM · FY 2027

I34 ICD-10-CM Code: Nonrheumatic mitral valve disorders

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

I34

Nonrheumatic mitral valve disorders

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where I34 sits

  1. 1

    Chapter 9

    Diseases of the circulatory system (I00-I99)

  2. 2

    Section

    Other forms of heart disease (I30-I5A)

  3. 3

    Category I34

    Nonrheumatic mitral valve disorders

  4. 4

    Code I34

    Nonrheumatic mitral valve disorders

More specific choices

Codes under I34

I34 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for I34.

Code first

No “code first” instruction is listed for I34.

Use additional code

No “use additional code” instruction is listed for I34.

Excludes1

Conditions that should not be reported together with this code.

  • mitral valve disease (I05.9)
  • mitral valve failure (I05.8)
  • mitral valve stenosis (I05.0)
  • mitral valve disorder of unspecified cause with diseases of aortic and/or tricuspid valve(s) (I08.-)
  • mitral valve disorder of unspecified cause with mitral stenosis or obstruction (I05.0)
  • mitral valve disorder specified as congenital (Q23.2, Q23.9)
  • mitral valve disorder specified as rheumatic (I05.-)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for I34.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code I34 mean?

I34 is the FY 2027 U.S. ICD-10-CM code for “Nonrheumatic mitral valve disorders.”

Is I34 a billable or specific ICD-10-CM code?

No. I34 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is I34 located in ICD-10-CM?

I34 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Other forms of heart disease (I30-I5A) (I30–I5A), under category I34, Nonrheumatic mitral valve disorders.

What coding notes are listed for I34?

No inclusion terms are listed for I34 in this reference record. No code-first instruction is listed. Excludes1 notes: mitral valve disease (I05.9); mitral valve failure (I05.8); mitral valve stenosis (I05.0); mitral valve disorder of unspecified cause with diseases of aortic and/or tricuspid valve(s) (I08.-); mitral valve disorder of unspecified cause with mitral stenosis or obstruction (I05.0); mitral valve disorder specified as congenital (Q23.2, Q23.9); mitral valve disorder specified as rheumatic (I05.-). No Excludes2 note is listed.

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