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  3. I00–I99
  4. I30-I5A
  5. Nonrheumatic mitral valve disorders (I34)

Nonrheumatic mitral valve disorders (I34)

The ICD-10 code for nonrheumatic mitral valve disorders (I34) covers various conditions affecting the mitral valve that are not caused by rheumatic fever. This series includes issues like mitral valve insufficiency, prolapse, stenosis, annulus calcification, and other specified or unspecified nonrheumatic mitral valve diseases.

These codes are used specifically to classify problems such as mitral regurgitation (I34.0), often referred to as mitral valve insufficiency, which involves backward blood flow due to valve leakage. It encompasses causes like acute myocardial infarction and functional mitral regurgitation. The code I34.1 covers mitral valve prolapse, a condition known by synonyms like familial or degenerative mitral valve prolapse, where valve leaflets bulge into the left atrium. For mitral stenosis without rheumatic origin, I34.2 captures valve narrowing and includes complications like prosthetic valve obstruction and calcification. Other specific codes such as I34.81 and I34.89 detail annulus calcification and a variety of rare or complex mitral valve abnormalities. When a nonrheumatic mitral valve disorder is diagnosed but not further specified, code I34.9 is applied. These detailed codes assist medical coders in accurately documenting such conditions for billing, treatment planning, and epidemiologic tracking.

Instructional Notations

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • 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 valves 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

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Mitral Valve Prolapse

Abnormal protrusion or billowing of one or both of the leaflets of MITRAL VALVE into the LEFT ATRIUM during SYSTOLE. This allows the backflow of blood into left atrium leading to MITRAL VALVE INSUFFICIENCY; SYSTOLIC MURMURS; or CARDIAC ARRHYTHMIA.