2026 ICD-10-CM Diagnosis Code D13.4Benign neoplasm of liver

ICD-10-CM Codes›C00–D49›D10-D36›D13

ICD-10-CM D13.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D13.4 is a billable ICD-10-CM diagnosis code for benign neoplasm of liver. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 441 through 443. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D13.4
Billable Status
Yes — Valid for Submission
Code Describes
Benign neoplasm of liver
Short Description
Benign neoplasm of liver
Same as the full description in the CMS dataset.
Parent Code
D13
Benign neoplasm of other and ill-defined parts of digestive system

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD13Benign neoplasm of other and ill-defined parts of digestive system
This CodeD13.4Benign neoplasm of liver

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Adenoma of liver
  • Benign neoplasm of intrahepatic bile ducts
  • Benign neoplasm of liver
  • Benign neoplasm of liver and/or biliary ducts
  • Bile duct adenoma of intrahepatic bile duct
  • Cholangioadenoma
  • Hepatic cystadenoma
  • Hepatocellular adenoma
  • Liver adenomatosis
  • Liver hamartoma
  • Mesenchymal hamartoma of liver

Tabular List NotesGuidance

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

Inclusion Terms

  • Benign neoplasm of intrahepatic bile ducts

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.

    • Adenoma
      • bile duct
    • Adenoma
      • bile duct
        • intrahepatic
    • Adenoma
      • bile duct
        • unspecified site
    • Adenoma
      • hepatocellular
    • Adenoma
      • liver cell
    • Cholangioma
    • Cystadenoma
      • bile duct
    • Hepatocholangioma, benign
    • Hepatoma(malignant)
      • benign
    • Teratoma(solid)
      • liver
        • adult, benign, cystic, differentiated type or mature

Clinical ClassificationClinical

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

CCSR NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hep G2 Cells

    a human liver tumor cell line used to study a variety of liver-specific metabolic functions.

  • Hepatoblastoma

    a malignant neoplasm occurring in young children, primarily in the liver, composed of tissue resembling embryonal or fetal hepatic epithelium, or mixed epithelial and mesenchymal tissues. (stedman, 25th ed)

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
bile or biliary (tract) › canaliculi (biliferi) (intrahepatic)C22.1C78.7D01.5D13.4D37.6D49.0
bile or biliary (tract) › canals, interlobularC22.1C78.89D01.5D13.4D37.6D49.0
bile or biliary (tract) › duct or passage (common) (cystic) (extrahepatic) › interlobularC22.1C78.89D01.5D13.4D37.6D49.0
bile or biliary (tract) › duct or passage (common) (cystic) (extrahepatic) › intrahepaticC22.1C78.7D01.5D13.4D37.6D49.0
canaliculi, biliary (biliferi) (intrahepatic)C22.1C78.7D01.5D13.4D37.6D49.0
cholangioleC22.1C78.89D01.5D13.4D37.6D49.0
gall duct (extrahepatic) › intrahepaticC22.1C78.7D01.5D13.4D37.6D49.0
hepatic [See Also: Index to disease, by histology]C22.9C78.7D01.5D13.4D37.6D49.0
hepatic [See Also: Index to disease, by histology] › primaryC22.8C78.7D01.5D13.4D37.6D49.0
hepatoblastomaC22.2C78.7D01.5D13.4D37.6D49.0
hepatomaC22.0C78.7D01.5D13.4D37.6D49.0
intrahepatic (bile) ductC22.1C78.7D01.5D13.4D37.6D49.0
liver [See Also: Index to disease, by histology]C22.9C78.7D01.5D13.4D37.6D49.0
liver [See Also: Index to disease, by histology] › primaryC22.8C78.7D01.5D13.4D37.6D49.0

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

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

Convert D13.4 to ICD-9-CMHistory

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

ICD-9-CM
211.5 Ben neo liver/bile ducts
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 D13.4Overview

Is D13.4 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of liver on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D13.4 group to?

When benign neoplasm of liver is the principal diagnosis on an inpatient stay, it groups to MS-DRG 441, 442, 443, with relative weights from 0.6997 to 1.7947 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D13.4?

Under the General Equivalence Mappings, benign neoplasm of liver converts to ICD-9-CM 211.5 (ben neo liver/bile ducts). 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.