FY2027 ICD-10-CM reference
Z94.4: Liver transplant status
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Liver transplant status. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Billable code. Verified against the official FY2027 order file.
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
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:
Source: Z00-Z99 (chapter, inherited).
Instructional note
(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.
Source: Z00-Z99 (chapter, inherited).
Instructional note
(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: Z00-Z99 (chapter, inherited).
Code also
any follow-up examination (Z08-Z09)
Source: Z77-Z99 (section, inherited).
Includes
organ or tissue replaced by heterogenous or homogenous transplant
Source: Z94 (category, inherited).
Excludes1
complications of transplanted organ or tissue - see Alphabetical Index
Source: Z94 (category, inherited).
Excludes2
presence of vascular grafts (Z95.-)
Source: Z94 (category, inherited).
Compare the FY2027 additions, removals and billable-status changes
What does Z94.4 mean in FY2027?
The official ICD-10-CM descriptor is Liver transplant status. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is Z94.4 billable in FY2027?
The FY2027 order file marks Z94.4 as billable. Check the complete Tabular instructions and documentation before assigning it.
Does Z94.4 map to an HCC?
In the CMS 2027 Initial ICD-10-CM Mappings (payment year 2027, 2026 dates of service), Z94.4 maps to CMS-HCC V28 HCC 62 (Liver Transplant Status/Complications). For 2027 dates of service, CMS has not yet published the payment year 2028 mappings. ESRD, RxHCC, PACE and HHS-HCC mappings are still pending verification for FY2027.
Source: CMS FY2027 ICD-10-CM order file. Read the FY2027 Official Guidelines.
Review the FY2026 April edition