2019 ICD-10-CM Diagnosis Code I42.5

Other restrictive cardiomyopathy

    2016 2017 2018 2019 Billable/Specific Code
  • I42.5 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM I42.5 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of I42.5 - other international versions of ICD-10 I42.5 may differ.
Applicable To
  • Constrictive cardiomyopathy NOS
The following code(s) above I42.5 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 I42.5:
  • I00-I99
    2019 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
  • I42
    ICD-10-CM Diagnosis Code I42

    Cardiomyopathy

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Code First
    • pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
    Includes
    • myocardiopathy
    Type 2 Excludes
    • ischemic cardiomyopathy (I25.5)
    • peripartum cardiomyopathy (O90.3)
    • ventricular hypertrophy (I51.7)
    Cardiomyopathy
Approximate Synonyms
  • Restrictive cardiomyopathy
  • Restrictive cardiomyopathy (heart condition)
Clinical Information
  • A disorder characterized by an inability of the ventricles to fill with blood because the myocardium (heart muscle) stiffens and loses its flexibility.
  • A form of cardiac muscle disease in which the ventricular walls are excessively rigid, impeding ventricular filling. It is marked by reduced diastolic volume of either or both ventricles but normal or nearly normal systolic function. It may be idiopathic or associated with other diseases (endomyocardial fibrosis or amyloidosis) causing interstitial fibrosis.
  • A type of heart disorder referring to the inability of the ventricles to fill with blood because the myocardium (heart muscle) stiffens and looses its flexibility. Causes include replacement of the myocardium with scar tissue, abnormal cellular infiltration of the myocardium, or deposition of a substance (e.g., amyloid) in the myocardium.
ICD-10-CM I42.5 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 314 Other circulatory system diagnoses with mcc
  • 315 Other circulatory system diagnoses with cc
  • 316 Other circulatory system diagnoses without cc/mcc

Convert I42.5 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

Diagnosis Index entries containing back-references to I42.5:
  • Cardiomyopathy (familial) (idiopathic) I42.9
    ICD-10-CM Diagnosis Code I42.9

    Cardiomyopathy, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Cardiomyopathy (primary) (secondary) NOS
    • constrictive NOS I42.5
    • restrictive NEC I42.5

ICD-10-CM Codes Adjacent To I42.5
I40.1 Isolated myocarditis
I40.8 Other acute myocarditis
I40.9 Acute myocarditis, unspecified
I41 Myocarditis in diseases classified elsewhere
I42 Cardiomyopathy
I42.0 Dilated cardiomyopathy
I42.1 Obstructive hypertrophic cardiomyopathy
I42.2 Other hypertrophic cardiomyopathy
I42.3 Endomyocardial (eosinophilic) disease
I42.4 Endocardial fibroelastosis
I42.5 Other restrictive cardiomyopathy
I42.6 Alcoholic cardiomyopathy
I42.7 Cardiomyopathy due to drug and external agent
I42.8 Other cardiomyopathies
I42.9 Cardiomyopathy, unspecified
I43 Cardiomyopathy in diseases classified elsewhere
I44 Atrioventricular and left bundle-branch block
I44.0 Atrioventricular block, first degree
I44.1 Atrioventricular block, second degree
I44.2 Atrioventricular block, complete
I44.3 Other and unspecified atrioventricular block

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