Cardiac arrest (I46)
ICD-10 code I46 is used specifically to classify instances of cardiac arrest, a sudden loss of heart function. This code and its subcodes help distinguish cardiac arrest caused by different underlying conditions or circumstances.
The category includes I46.2 for cardiac arrest due to an underlying cardiac condition, often referred to as bradycardic cardiac arrest or cardiac arrest due to cardiac disorder. Code I46.8 covers cardiac arrest resulting from other causes such as trauma, respiratory issues, electrocution, drowning, or pacemaker failure. Meanwhile, I46.9 is used when the cause of cardiac arrest is unspecified, encompassing scenarios like arrest during medical procedures, post-resuscitation events, or complications related to anesthesia or pregnancy. For medical coders seeking the ICD-10 code for cardiac arrest, these distinct codes help specify the arrest’s origin, ensuring accurate documentation and coding that reflects the clinical situation precisely.
Diseases of the circulatory system (I00–I99)
Other forms of heart disease (I30-I5A)
I46 Cardiac arrest
- I46.2 Cardiac arrest due to underlying cardiac condition
- I46.8 Cardiac arrest due to other underlying condition
- I46.9 Cardiac arrest, cause unspecified
Cardiac arrest (I46)
Instructional Notations
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- cardiogenic shock R57.0
