2026 ICD-10-CM Diagnosis Code Z94.3Heart and lungs transplant status

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z94

ICD-10-CM Z94.3
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z94.3 is a billable ICD-10-CM diagnosis code for heart and lungs transplant status. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 314 through 316. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as H/O: heart recipient. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Organ transplant status.

Code Identity

ICD-10-CM Code
Z94.3
Billable Status
Yes — Valid for Submission
Code Describes
Heart and lungs transplant status
Short Description
Heart and lungs transplant status
Same as the full description in the CMS dataset.
Parent Code
Z94
Transplanted organ and tissue status

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategoryZ94Transplanted organ and tissue status
This CodeZ94.3Heart and lungs transplant status

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z94.3.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z94.3 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • H/O: heart recipient
  • H/O: lung recipient
  • History of heart-lung transplant recipient
  • Transplanted heart-lung present
  • Transplanted lung present

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Transplant(ed) (status)
      • heart
        • and lung (s)
    • Transplant(ed) (status)
      • lung (s)
        • and heart

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC023
Organ transplant status
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Heart Transplantation

A heart transplant removes a damaged or diseased heart and replaces it with a healthy one. The healthy heart comes from a donor who has died. It is the last resort for people with heart failure when all other treatments have failed.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z94.3 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V42.1 Heart transplant status
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
V42.6 Lung transplant status
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z94.3Overview

Is Z94.3 (Transplanted organ and tissue status) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report heart and lungs transplant status on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Z94.3 group to?

On inpatient claims, heart and lungs transplant status maps to MS-DRG 314, 315, 316, with relative weights from 0.6821 to 2.0852 depending on complications. Higher weights mean higher Medicare reimbursement.

Can Z94.3 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because heart and lungs transplant status describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z94.3 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for heart and lungs transplant status on inpatient claims.

What is the ICD-9 equivalent of Z94.3?

Under the General Equivalence Mappings, heart and lungs transplant status converts to ICD-9-CM V42.1 (heart transplant status) and V42.6 (lung transplant status). The mapping is approximate, so confirm the match fits the documentation.