2026 ICD-10-CM Diagnosis Code D47.Z1Post-transplant lymphoproliferative disorder (PTLD)

ICD-10-CM Codes›C00–D49›D37-D48›D47

ICD-10-CM D47.Z1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D47.Z1 is a billable ICD-10-CM diagnosis code for post-transplant lymphoproliferative disorder (PTLD). It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 919 through 921. The code is not accepted as a principal diagnosis by the Medicare Code Editor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neoplasms of unspecified nature or uncertain behavior.

Code Identity

ICD-10-CM Code
D47.Z1
Billable Status
Yes — Valid for Submission
Code Describes
Post-transplant lymphoproliferative disorder (PTLD)
Short Description
Post-transplant lymphoproliferative disorder (PTLD)
Same as the full description in the CMS dataset.
Parent Code
D47.Z
Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue

Code Classification

ChapterC00–D49Neoplasms
SectionD37-D48Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
CategoryD47Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
This CodeD47.Z1Post-transplant lymphoproliferative disorder (PTLD)

Code EditsBilling

Medicare Code Editor checks that affect claim validity for D47.Z1.

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.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Early post-transplant lymphoproliferative disorder
  • Iatrogenic immunodeficiency-associated lymphoproliferative disorder
  • Infectious mononucleosis-like post-transplant lymphoproliferative disorder
  • Lymphoproliferative disorder after transplantation of bone marrow
  • Lymphoproliferative disorder following heart transplantation
  • Lymphoproliferative disorder following kidney transplant
  • Lymphoproliferative disorder following liver transplant
  • Lymphoproliferative disorder following lung transplant
  • Lymphoproliferative disorder following transplantation
  • Monomorphic posttransplant lymphoproliferative disorder
  • Neoplasia following lung transplant
  • Neoplasm following transplantation of bone marrow
  • Neoplasm following transplantation of kidney
  • Neoplasm following transplantation of liver
  • Polymorphic lymphoproliferative disorder following transplant
  • Reactive plasmacytic hyperplasia post-transplant lymphoproliferative disorder

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code First

  • complications of transplanted organs and tissue T86

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.

    • Complication(s) (from) (of)
      • transplant
        • post-transplant lymphoproliferative disorder (PTLD)
    • Disorder(of)
      • lymphoproliferative, post-transplant (PTLD)
    • Disorder(of)
      • post-transplant lymphoproliferative

Clinical ClassificationClinical

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

CCSR NEO072
Neoplasms of unspecified nature or uncertain behavior
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

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Read the full article at MedlinePlus

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

Convert D47.Z1 to ICD-9-CMHistory

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

ICD-9-CM
238.77 Post tp lymphprolif dis
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D47.Z1Overview

Is D47.Z1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report post-transplant lymphoproliferative disorder (PTLD) on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D47.Z1 group to?

On inpatient claims, post-transplant lymphoproliferative disorder (PTLD) maps to MS-DRG 919, 920, 921, with relative weights from 0.6884 to 1.8308 depending on complications. Higher weights mean higher Medicare reimbursement.

Can D47.Z1 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because post-transplant lymphoproliferative disorder (PTLD) describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

What is the ICD-9 equivalent of D47.Z1?

Under the General Equivalence Mappings, post-transplant lymphoproliferative disorder (PTLD) converts to ICD-9-CM 238.77 (post tp lymphprolif dis). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.