2027 ICD-10-CM Diagnosis Code Z94.6Bone transplant status

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z94

ICD-10-CM Z94.6
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z94.6 is a billable ICD-10-CM diagnosis code for bone transplant status. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566. 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: bone tissue recipient. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Organ transplant status.

Code Identity

ICD-10-CM Code
Z94.6
Billable Status
Yes — Valid for Submission
Code Describes
Bone transplant status
Short Description
Bone 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 CodeZ94.6Bone transplant status

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z94.6.

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

Z94.6 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • H/O: bone tissue recipient
  • Transplanted bone present

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z94.6: its own notes plus those printed at Z94, block Z77-Z99, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Z94 Transplanted organ and tissue status applies to 14 codes
  • organ or tissue replaced by heterogenous or homogenous transplant

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Z94 Transplanted organ and tissue status applies to 14 codes
  • complications of transplanted organ or tissue - see Alphabetical Index

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Z94 Transplanted organ and tissue status applies to 14 codes
  • presence of vascular grafts (Z95.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status applies to 567 codes
  • any follow-up examination (Z08-Z09)

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z94.6, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming Z94.6: they are not reported together with it, unless the two conditions are unrelated.

  • Z18 Retained foreign body fragments
    organ or tissue replaced by transplant (Z94.-) names Z94.-, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming Z94.6: its condition is not part of those codes, and both may be reported when the patient has both.

  • Z87.7 Personal history of (corrected) congenital malformations
    transplanted organ and tissue status (Z94.-) names Z94.-, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 Grafts

A bone graft transplants bone tissue. Surgeons use bone grafts to repair and rebuild diseased bones in your hips, knees, spine, and sometimes other bones and joints. Grafts can also repair bone loss caused by some types of fractures (broken bones) or cancers.

Read the full article at MedlinePlus

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

Convert Z94.6 to ICD-9-CMHistory

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

ICD-9-CM
V42.4 Bone transplant status
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z94.6Overview

What is the ICD-10 code for bone transplant status?

The ICD-10-CM code for bone transplant status is Z94.6 (sometimes written as Z946). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z94.6 (Transplanted organ and tissue status) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report bone transplant status on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z94.6 group to?

On inpatient claims, bone transplant status maps to MS-DRG 564, 566, 565, with relative weights from 0.7374 to 1.4909 depending on complications. Higher weights mean higher Medicare reimbursement.

Can Z94.6 be a principal diagnosis?

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

Is Z94.6 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 transplant status on inpatient claims. The code appears in the Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) range of the CMS exempt list.