Diagnosis Code I21.21
Information for Medical Professionals
The diagnosis code I21.21 is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)
- 222 - CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITH AMI/HF/SHOCK WITH MCC
- 223 - CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITH AMI/HF/SHOCK WITHOUT MCC
- 224 - CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITHOUT AMI/HF/SHOCK WITH MCC
- 225 - CARDIAC DEFIBRILLATOR IMPLANT WITH CARDIAC CATHETERIZATION WITHOUT AMI/HF/SHOCK WITHOUT MCC
- 226 - CARDIAC DEFIBRILLATOR IMPLANT WITHOUT CARDIAC CATHETERATION WITH MCC
- 227 - CARDIAC DEFIBRILLATOR IMPLANT WITHOUT CARDIAC CATHETERIZATION WITHOUT MCC
Convert to ICD-9 General Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
- 410.81 - AMI NEC, initial (approximate) Approximate Flag
The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
Index of Diseases and Injuries
References found for the code I21.21 in the Index of Diseases and Injuries:
- Inclusion Terms: Inclusion terms
List of terms is included under some codes. 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.
- ST elevation (STEMI) myocardial infarction involving oblique marginal coronary artery
Information for Patients
Also called: MI, Myocardial infarction
Each year over a million people in the U.S. have a heart attack. About half of them die. Many people have permanent heart damage or die because they don't get help immediately. It's important to know the symptoms of a heart attack and call 9-1-1 if someone is having them. Those symptoms include
- Chest discomfort - pressure, squeezing, or pain
- Shortness of breath
- Discomfort in the upper body - arms, shoulder, neck, back
- Nausea, vomiting, dizziness, lightheadedness, sweating
These symptoms can sometimes be different in women.
What exactly is a heart attack? Most heart attacks happen when a clot in the coronary artery blocks the supply of blood and oxygen to the heart. Often this leads to an irregular heartbeat - called an arrhythmia - that causes a severe decrease in the pumping function of the heart. A blockage that is not treated within a few hours causes the affected heart muscle to die.
NIH: National Heart, Lung, and Blood Institute
- Being active after your heart attack (Medical Encyclopedia)
- Cardiac catheterization - discharge (Medical Encyclopedia)
- Heart attack (Medical Encyclopedia)
- Heart attack - discharge (Medical Encyclopedia)
- Learn What a Heart Attack Feels Like--It Could Save Your Life - NIH - Easy-to-Read (National Heart, Lung, and Blood Institute)
- Troponin test (Medical Encyclopedia)