Z48.21: Encounter for aftercare following heart transplant
Z48.21 is a billable, specific ICD-10-CM code for encounter for aftercare following heart transplant. It is valid for submission on a claim.
Check Z48.21 with the rest of the claim: free scrubberExcludes1 inherited from the categories above Z48.21
A category’s note binds every code beneath it.
Excludes2 inherited from the categories above Z48.21
Not part of this code, but both may be coded when both are present.
Risk adjustment
Z48.21 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 221 Heart Transplant Status/Complications1.053 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
Z48.21 is named in 42 Medicare coverage policies: 42 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A52474Immunosuppressive Drugs - Policy Article
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A52868Billing and Coding: Transesophageal Echocardiography (TEE)
- A53775Billing and Coding: Frequency and Duration for Cardiac Rehabilitation and Intensive Cardiac Rehabilitation
Alphabetic index entries that lead here
- Aftercare›following surgery›organ transplant›heart
Code history
Unchanged in every release from FY2024 to FY2027.