2020 ICD-10-CM Diagnosis Code I35.1

Nonrheumatic aortic (valve) insufficiency

    2016 2017 2018 2019 2020 Billable/Specific Code
  • I35.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM I35.1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of I35.1 - other international versions of ICD-10 I35.1 may differ.
Applicable To
  • Nonrheumatic aortic (valve) incompetence NOS
  • Nonrheumatic aortic (valve) regurgitation NOS
The following code(s) above I35.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I35.1:
  • I00-I99
    2020 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • transient cerebral ischemic attacks and related syndromes (G45.-)
    Diseases of the circulatory system
  • I35
    ICD-10-CM Diagnosis Code I35

    Nonrheumatic aortic valve disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • aortic valve disorder of unspecified cause but with diseases of mitral and/or tricuspid valve(s) (I08.-)
    • aortic valve disorder specified as congenital (Q23.0, Q23.1)
    • aortic valve disorder specified as rheumatic (I06.-)
    • hypertrophic subaortic stenosis (I42.1)
    Nonrheumatic aortic valve disorders
Approximate Synonyms
  • Aortic incompetence, non-rheumatic
  • Aortic valve regurgitation
  • Collapsing pulse
Clinical Information
  • Backflow of blood from the aorta into the left ventricle, due to imperfect functioning of the aortic valve
  • Backflow of blood from the aorta into the left ventricle, owing to imperfect functioning of the aortic semilunar valve.
  • Dysfunction of the aortic valve, with incomplete valve closure resulting in valvular regurgitation.
  • Pathological condition characterized by the backflow of blood from the ascending aorta back into the left ventricle, leading to regurgitation. It is caused by diseases of the aortic valve or its surrounding tissue (aortic root).
  • The backward flow of blood from the aorta into the left ventricle, owing to insufficiency of the aortic semilunar valve; it may be chronic or acute.
ICD-10-CM I35.1 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 306 Cardiac congenital and valvular disorders with mcc
  • 307 Cardiac congenital and valvular disorders without mcc

Convert I35.1 to ICD-9-CM

Code 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

Diagnosis Index entries containing back-references to I35.1:
  • Austin Flint murmur I35.1 (aortic insufficiency)
  • Flint murmur I35.1 (aortic insufficiency)
  • Insufficiency, insufficient
    • aortic (valve) I35.1
      • specified cause NEC I35.1
  • Murmur (cardiac) (heart) (organic) R01.1
    ICD-10-CM Diagnosis Code R01.1

    Cardiac murmur, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Cardiac bruit NOS
    • Heart murmur NOS
    • Systolic murmur NOS
    • Flint I35.1

ICD-10-CM Codes Adjacent To I35.1
I33.0 Acute and subacute infective endocarditis
I33.9 Acute and subacute endocarditis, unspecified
I34 Nonrheumatic mitral valve disorders
I34.0 Nonrheumatic mitral (valve) insufficiency
I34.1 Nonrheumatic mitral (valve) prolapse
I34.2 Nonrheumatic mitral (valve) stenosis
I34.8 Other nonrheumatic mitral valve disorders
I34.9 Nonrheumatic mitral valve disorder, unspecified
I35 Nonrheumatic aortic valve disorders
I35.0 Nonrheumatic aortic (valve) stenosis
I35.1 Nonrheumatic aortic (valve) insufficiency
I35.2 Nonrheumatic aortic (valve) stenosis with insufficiency
I35.8 Other nonrheumatic aortic valve disorders
I35.9 Nonrheumatic aortic valve disorder, unspecified
I36 Nonrheumatic tricuspid valve disorders
I36.0 Nonrheumatic tricuspid (valve) stenosis
I36.1 Nonrheumatic tricuspid (valve) insufficiency
I36.2 Nonrheumatic tricuspid (valve) stenosis with insufficiency
I36.8 Other nonrheumatic tricuspid valve disorders
I36.9 Nonrheumatic tricuspid valve disorder, unspecified
I37 Nonrheumatic pulmonary valve disorders

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.