2025 ICD-10-CM Diagnosis Code I35.8

Other nonrheumatic aortic valve disorders

• I35.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2025 edition of ICD-10-CM I35.8 became effective on October 1, 2024.
• This is the American ICD-10-CM version of I35.8 – other international versions of ICD-10 I35.8 may differ.

The following code(s) above I35.8 contain annotation back-references

 that may be applicable to I35.8:

• I00-I99  Diseases of the circulatory system
• I35  Nonrheumatic aortic valve disorders

Approximate Synonyms

• Aortic valve cusp prolapse
• Aortic valve endocarditis
• Aortic valve prolapse
• Aortic valve sclerosis
• Infective endocarditis of aortic valve

ICD-10-CM I35.8 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

• 306 Cardiac congenital and valvular disorders with mcc
• 307 Cardiac congenital and valvular disorders without mcc

Convert I35.8 to ICD-9-CMCode History

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change
• 2022 (effective 10/1/2021): No change
• 2023 (effective 10/1/2022): No change
• 2024 (effective 10/1/2023): No change
• 2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to I35.8:

• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) I72.9
  • aorta, aortic (nonsyphilitic) I71.9
    • valve I35.8 (heart) – see also Endocarditis, aortic
• Atheroma, atheromatousI70.90 – see also Arteriosclerosis
  • aorta, aorticI70.0
    • valve I35.8 – see also Endocarditis, aortic
• DeformityQ89.9
  • aortic
    • cusp or valve (congenital) Q23.88
      • acquired I35.8 – see also Endocarditis, aortic
• Ectasia, ectasis
  • annuloaortic I35.8
• Endocarditis (chronic) (marantic) (nonbacterial) (thrombotic) (valvular) I38
  • aortic (heart) (nonrheumatic) (valve) I35.8
    • arteriosclerotic I35.8
    • specified cause NEC I35.8
• Failure, failed
  • aortic (valve) I35.8
• Rupture, ruptured
  • aorta, aorticI71.8
    • valve or cusp I35.8 – see also Endocarditis, aortic