ICD-10-CM Code I40

Acute myocarditis

Version 2021 Non-Billable Code

Not Valid for Submission

I40 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of acute myocarditis. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:I40
Short Description:Acute myocarditis
Long Description:Acute myocarditis

Consider the following ICD-10 codes with a higher level of specificity:

  • I40.0 - Infective myocarditis
  • I40.1 - Isolated myocarditis
  • I40.8 - Other acute myocarditis
  • I40.9 - ... unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code I40:

Includes

Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
  • subacute myocarditis

Type 1 Excludes

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.
  • acute rheumatic myocarditis I01.2

Code Classification

  • Diseases of the circulatory system (I00–I99)
    • Other forms of heart disease (I30-I52)
      • Acute myocarditis (I40)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Cardiomyopathy

Also called: Dilated cardiomyopathy, Hypertrophic cardiomyopathy, Myocardiopathy, Restrictive cardiomyopathy

Cardiomyopathy is the name for diseases of the heart muscle. These diseases enlarge your heart muscle or make it thicker and more rigid than normal. In rare cases, scar tissue replaces the muscle tissue.

Some people live long, healthy lives with cardiomyopathy. Some people don't even realize they have it. In others, however, it can make the heart less able to pump blood through the body. This can cause serious complications, including

  • Heart failure
  • Abnormal heart rhythms
  • Heart valve problems
  • Sudden cardiac arrest

Heart attacks, high blood pressure, infections, and other diseases can all cause cardiomyopathy. Some types of cardiomyopathy run in families. In many people, however, the cause is unknown. Treatment might involve medicines, surgery, other medical procedures, and lifestyle changes.

NIH: National Heart, Lung, and Blood Institute

  • Cardiomyopathy (Medical Encyclopedia)
  • Dilated cardiomyopathy (Medical Encyclopedia)
  • Electrocardiogram (Medical Encyclopedia)
  • Hypertrophic cardiomyopathy (Medical Encyclopedia)

[Learn More]