I46.9
I46.9: Cardiac arrest, cause unspecified
Billable / specific codeICD-10-CM
I46.9 is a billable, specific ICD-10-CM code for cardiac arrest, cause unspecified. It is valid for submission on a claim.
Check I46.9 with the rest of the claim: free scrubberOther codes that can never be billed with I46.9
Their own Excludes1 notes name this code, so the conflict is not listed above.
- R09.2Respiratory arrest
Risk adjustment
I46.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 213 Cardio-Respiratory Failure and Shock0.370 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.
Medicare coverage
I46.9 is named in 17 Medicare coverage policies: 17 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A52458Automatic External Defibrillators - Policy Article
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A56391Billing and Coding: Implantable Automatic Defibrillators
- A56421Billing and Coding: CT of the Abdomen and Pelvis
Alphabetic index entries that lead here
- Arrest, arrested›cardiac
Code history
Unchanged in every release from FY2024 to FY2027.