2026 ICD-10-CM Diagnosis Code K71.4Toxic liver disease with chronic lobular hepatitis

ICD-10-CM Codes›K00–K95›K70-K77›K71

ICD-10-CM K71.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K71.4 is a billable ICD-10-CM diagnosis code for toxic liver disease with chronic lobular hepatitis. 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 Drug induced or toxic related condition and Noninfectious hepatitis.

Code Identity

ICD-10-CM Code
K71.4
Billable Status
Yes — Valid for Submission
Code Describes
Toxic liver disease with chronic lobular hepatitis
Short Description
Toxic liver disease with chronic lobular hepatitis
Same as the full description in the CMS dataset.
Parent Code
K71
Toxic liver disease

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK70-K77Diseases of liver
CategoryK71Toxic liver disease
This CodeK71.4Toxic liver disease with chronic lobular hepatitis

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.

    • Disease, diseased
      • liver (chronic) (organic)
        • toxic
          • with
            • hepatitis NEC
              • chronic
                • lobular

Clinical ClassificationClinical

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

CCSR INJ030
Drug induced or toxic related condition
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG023
Noninfectious hepatitis
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Hepatitis

Hepatitis is inflammation of the liver. Inflammation is swelling that happens when tissues of the body are injured or infected. It can damage your liver. This swelling and damage can affect how well your liver functions.

The full article covers:

  • What is hepatitis?
  • What causes hepatitis?
  • How is viral hepatitis spread?
  • Who is at risk for hepatitis?
  • What are the symptoms of hepatitis?
  • What other problems can hepatitis cause?
  • How is hepatitis diagnosed?
  • What are the treatments for hepatitis?

Read the full article at MedlinePlus

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

Convert K71.4 to ICD-9-CMHistory

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

ICD-9-CM
573.3 Hepatitis NOS
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 K71.4Overview

Is K71.4 (Toxic liver disease) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report toxic liver disease with chronic lobular hepatitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K71.4 group to?

When toxic liver disease with chronic lobular hepatitis 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 K71.4?

Under the General Equivalence Mappings, toxic liver disease with chronic lobular hepatitis converts to ICD-9-CM 573.3 (hepatitis NOS). The mapping is approximate, so confirm the match fits the documentation.

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.