2026 ICD-10-CM Diagnosis Code D47.Z9Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue

ICD-10-CM Codes›C00–D49›D37-D48›D47

ICD-10-CM D47.Z9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D47.Z9 is a billable ICD-10-CM diagnosis code for other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 820 through 825, 840 through 842. Coders also document this condition as finding of lymph node. 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.Z9
Billable Status
Yes — Valid for Submission
Code Describes
Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
Short Description
Oth neoplm of uncrt behav of lymphoid, hematpoetc & rel tiss
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.Z9Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Finding of lymph node
  • Malignant white blood cell disorder
  • Precursor T-cell neoplasm
  • Primary cutaneous CD4 positive small and medium T-cell lymphoproliferative disorder
  • Reactive follicular hyperplasia in the elderly
  • Reactive immunoproliferative disease
  • T-cell AND/OR NK-cell neoplasm

Tabular List NotesGuidance

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

Inclusion Terms

  • Histiocytic tumors of uncertain behavior

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.

    • Anemia(essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound)
      • myeloproliferative
    • Disease, diseased
      • lymphoproliferative
        • specified NEC
    • Disease, diseased
      • lymphoproliferative
        • T-gamma
    • Lesion(s) (nontraumatic)
      • angiocentric immunoproliferative

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 Yes · outpatient Yes

Patient EducationClinical

Blood Disorders

Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets.

Read the full article at MedlinePlus

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

Convert D47.Z9 to ICD-9-CMHistory

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

ICD-9-CM
238.79 Lymph/hematpoitc tis NEC
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 D47.Z9Overview

Is D47.Z9 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D47.Z9 group to?

When other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue is the principal diagnosis on an inpatient stay, it groups to MS-DRG 820, 821, 822, 823, 824, 825, 840, 841, 842, with relative weights from 1.0104 to 5.8648 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D47.Z9?

Under the General Equivalence Mappings, other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue converts to ICD-9-CM 238.79 (lymph/hematpoitc tis NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.