ICD-10-CM
ICD-10 code for Mitral valve prolapse: I34.1
The closest CDC title for "Mitral valve prolapse" is I34.1, Nonrheumatic mitral (valve) prolapse. I34.1 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under I34, then other CDC titles that name nonrheumatic mitral (valve) prolapse
A header groups codes and is not billed. A billable code is one you can report.
- I34Nonrheumatic mitral valve disordersHeader
- I34.0Nonrheumatic mitral (valve) insufficiencyBillable
- I34.1Nonrheumatic mitral (valve) prolapseBillable
- I34.2Nonrheumatic mitral (valve) stenosisBillable
- I34.8Other nonrheumatic mitral valve disordersHeader
- I34.81Nonrheumatic mitral (valve) annulus calcificationBillable
- I34.89Other nonrheumatic mitral valve disordersBillable
- I34.9Nonrheumatic mitral valve disorder, unspecifiedBillable
Excludes1
Excludes1 means these codes are not reported together.
From I34. A note on a category applies to every code under it.
- I05.9Mitral valve disease
- I05.8Mitral valve failure
- I05.0Mitral valve stenosis
- I08.-Mitral valve disorder of unspecified cause with diseases of aortic and/or tricuspid valve(s)
- I05.0Mitral valve disorder of unspecified cause with mitral stenosis or obstruction
- Q23.2, Q23.9Mitral valve disorder specified as congenital
- I05.-Mitral valve disorder specified as rheumatic
Related conditions
Related pages
- I34.1 code detailsNotes, nearby codes, CMS-HCC group
- Category I34Every code under it
- Chapter 9Diseases of the circulatory system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Mitral valve prolapse?
The closest CDC title for "Mitral valve prolapse" is I34.1, Nonrheumatic mitral (valve) prolapse. I34.1 is a billable code.
Is I34.1 billable?
Yes. I34.1 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to I34.1?
The CDC tabular list gives 8 Excludes1 notes (not coded together) for I34.1 and the categories above it. They are listed on this page.
What chapter is I34.1 in?
Chapter 9. Diseases of the circulatory system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.