ICD-10-CM
Z48.21: Encounter for aftercare following heart transplant
A billable ICD-10-CM diagnosis code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
- Kind
- Billable code
- Category
- Z48
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Nearby codes
A header groups codes and is not billed. A billable code is one you can report.
- Z48.22Encounter for aftercare following kidney transplantBillable
- Z48.23Encounter for aftercare following liver transplantBillable
- Z48.24Encounter for aftercare following lung transplantBillable
- Z48.28Encounter for aftercare following multiple organ transplantHeader
- Z48.29Encounter for aftercare following other organ transplantHeader
It's the public CDC file. Check the current ICD-10-CM guidelines before you code.
Excludes1
Excludes1 means these codes are not reported together.
From Z48. A note on a category applies to every code under it.
- Z08-Z09Encounter for follow-up examination after completed treatment
- encounter for aftercare following injury - code to Injury, by site, with appropriate 7th character for subsequent encounter
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From Z48. A note on a category applies to every code under it.
CMS-HCC, payment year 2027 (initial mapping)
A CMS-HCC group is a risk-adjustment category. This page does not decide payment.
- CMS-HCC category 221 (payment year 2027 model)