ICD-10-CM 2027
ICD-10 code for heart transplant
From the official ICD-10-CM alphabetic index entry “Transplant (ed) (status) › heart”. Page updated September 29, 2026.
About coding heart transplant
The ICD-10-CM code for heart transplant is Z94.1 (Heart transplant status). The official index lists 5 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z94.1.
Within Z94 (transplanted organ and tissue status), Z94.1 is specifically for heart transplant status. Related codes cover kidney transplant status (Z94.0), lung transplant status (Z94.2), heart and lungs transplant status (Z94.3), liver transplant status (Z94.4), skin transplant status (Z94.5), bone transplant status (Z94.6), corneal transplant status (Z94.7), other transplanted organ and tissue status (Z94.8) and 1 more.
Don't report Z94.1 together with the conditions in its Excludes1 note: artificial heart status (Z95.812) and heart-valve replacement status (Z95.2-Z95.4).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific heart transplant codes (official index)
Don't confuse with (Excludes1 for Z94.1)
Common questions about heart transplant ICD-10 codes
What is the ICD-10 code for heart transplant?
- Z94.1 — Heart transplant status. More specific codes apply when the documentation supports them: Z94.3, Z95.2, Z95.2, Z95.4 and others below.
What is the ICD-10 code for valve heart transplant?
- Z95.2 — Presence of prosthetic heart valve.
Is Z94.1 billable?
- Yes. Z94.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z94.1 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z94.1 a CC or MCC?
- Z94.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.