2026 ICD-10-CM Diagnosis Code Z94.81Bone marrow transplant status

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z94

ICD-10-CM Z94.81
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z94.81 is a billable ICD-10-CM diagnosis code for bone marrow transplant status. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 814 through 816. 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 bone marrow transplant present. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Organ transplant status.

Code Identity

ICD-10-CM Code
Z94.81
Billable Status
Yes — Valid for Submission
Code Describes
Bone marrow transplant status
Short Description
Bone marrow transplant status
Same as the full description in the CMS dataset.
Parent Code
Z94.8
Other 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 CodeZ94.81Bone marrow transplant status

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z94.81.

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

Z94.81 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.

  • Bone marrow transplant present
  • Growth hormone deficiency after bone marrow transplant
  • History of allotransplantation of bone marrow
  • History of autologous bone marrow transplant
  • History of bone marrow transplant
  • Hypopituitarism following procedure

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)
      • bone
        • marrow

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

Bone Marrow Transplantation

Bone marrow is the spongy tissue inside some of your bones, such as your hip and thigh bones. It contains immature cells, called stem cells. The stem cells can develop into red blood cells, which carry oxygen throughout the body, white blood cells, which fight infections, and platelets, which help the blood to clot.

Read the full article at MedlinePlus

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

Convert Z94.81 to ICD-9-CMHistory

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

ICD-9-CM
V42.81 Trnspl status-bne marrow
Approximate The match is approximate rather than exact.

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 Z94.81Overview

Is Z94.81 (Other transplanted organ and tissue status) a billable code?

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

What MS-DRG does Z94.81 group to?

On inpatient claims, bone marrow transplant status maps to MS-DRG 814, 815, 816, with relative weights from 0.6320 to 2.1267 depending on complications. Higher weights mean higher Medicare reimbursement.

Can Z94.81 be a principal diagnosis?

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

Is Z94.81 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 bone marrow transplant status on inpatient claims.

What is the ICD-9 equivalent of Z94.81?

Under the General Equivalence Mappings, bone marrow transplant status converts to ICD-9-CM V42.81 (trnspl status-bne marrow). The mapping is approximate, so confirm the match fits the documentation.