ICD-10 I34
Non-Billable HeaderNonrheumatic mitral valve disorders
About ICD-10-CM I34
ICD-10-CM code I34 represents Nonrheumatic mitral valve disorders. This is a non-billable header code in the Circulatory System chapter (block I34). The 2026 edition of ICD-10-CM I34 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with I34. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- 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.-)
Medicare LCD Coverage for I34
Local Coverage Determinations (LCDs) from CMS MACs that list I34 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I34.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but I34 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with I34
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To I34
Other codes in section I30-I5A (Other forms of heart disease).
ICD-10 I34, Billing FAQ
Is ICD-10 code I34 billable? +
No, I34 is a non-billable header code. Use a more specific child code from block I34 when submitting claims.
What codes are Type 1 Excludes for I34? +
Type 1 Excludes (never code together with I34): mitral valve disease (I05.9); mitral valve failure (I05.8); mitral valve stenosis (I05.0)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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