ICD-10-CM Code I25.9

Chronic ischemic heart disease, unspecified

Version 2021 Billable Code Cardiology

Valid for Submission

I25.9 is a billable code used to specify a medical diagnosis of chronic ischemic heart disease, unspecified. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code I25.9 might also be used to specify conditions or terms like chronic ischemic heart disease, chronic myocardial ischemia, decreased myocardial ischemia compared to prior study, ekg myocardial ischemia, ekg myocardial ischemia, ekg: inferior ischemia, etc

The code is commonly used in cardiology medical specialties to specify clinical concepts such as selected atherosclerosis, ischemia, and infarction.

ICD-10:I25.9
Short Description:Chronic ischemic heart disease, unspecified
Long Description:Chronic ischemic heart disease, 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 I25.9:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Ischemic heart disease (chronic) NOS

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code I25.9 are found in the index:


Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Chronic ischemic heart disease
  • Chronic myocardial ischemia
  • Decreased myocardial ischemia compared to prior study
  • EKG myocardial ischemia
  • EKG myocardial ischemia
  • EKG: inferior ischemia
  • Hibernating myocardium
  • Increased myocardial ischemia compared to prior study
  • Ischemic heart disease
  • Ischemic myocardial dysfunction
  • Mixed myocardial ischemia and infarction
  • Myocardial ischemia
  • Myocardial ischemia manifest on stress test status post myocardial infarction
  • New myocardial ischemia compared to prior study
  • Resting ischemia
  • Stunned myocardium

Diagnostic Related Groups

The ICD-10 code I25.9 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.

  • 302 - ATHEROSCLEROSIS WITH MCC
  • 303 - ATHEROSCLEROSIS WITHOUT MCC

Convert I25.9 to ICD-9

  • 414.8 - Chr ischemic hrt dis NEC (Approximate Flag)
  • 414.9 - Chr ischemic hrt dis NOS (Approximate Flag)

Code Classification

  • Diseases of the circulatory system (I00–I99)
    • Ischemic heart diseases (I20-I25)
      • Chronic ischemic heart disease (I25)

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


Coronary Artery Disease

Also called: CAD, Coronary arteriosclerosis, Coronary atherosclerosis

Coronary artery disease (CAD) is the most common type of heart disease. It is the leading cause of death in the United States in both men and women.

CAD happens when the arteries that supply blood to heart muscle become hardened and narrowed. This is due to the buildup of cholesterol and other material, called plaque, on their inner walls. This buildup is called atherosclerosis. As it grows, less blood can flow through the arteries. As a result, the heart muscle can't get the blood or oxygen it needs. This can lead to chest pain (angina) or a heart attack. Most heart attacks happen when a blood clot suddenly cuts off the hearts' blood supply, causing permanent heart damage.

Over time, CAD can also weaken the heart muscle and contribute to heart failure and arrhythmias. Heart failure means the heart can't pump blood well to the rest of the body. Arrhythmias are changes in the normal beating rhythm of the heart.

NIH: National Heart, Lung, and Blood Institute

  • Acute coronary syndrome (Medical Encyclopedia)
  • Angioplasty and stent - heart - discharge (Medical Encyclopedia)
  • Angioplasty and stent placement - heart (Medical Encyclopedia)
  • Coronary angiography (Medical Encyclopedia)
  • Coronary artery spasm (Medical Encyclopedia)
  • Coronary heart disease (Medical Encyclopedia)

[Learn More]