2026 ICD-10-CM Diagnosis Code K74.01Hepatic fibrosis, early fibrosis

ICD-10-CM Codes›K00–K95›K70-K77›K74

ICD-10-CM K74.01
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K74.01 is a billable ICD-10-CM diagnosis code for hepatic fibrosis, early fibrosis. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 432 through 434. The code is not accepted as a principal diagnosis by the Medicare Code Editor. Coders also document this condition as chronic hepatitis C with stage 2 fibrosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified liver disease.

Code Identity

ICD-10-CM Code
K74.01
Billable Status
Yes — Valid for Submission
Code Describes
Hepatic fibrosis, early fibrosis
Short Description
Hepatic fibrosis, early fibrosis
Same as the full description in the CMS dataset.
Parent Code
K74.0
Hepatic fibrosis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK70-K77Diseases of liver
CategoryK74Fibrosis and cirrhosis of liver
This CodeK74.01Hepatic fibrosis, early fibrosis

Code EditsBilling

Medicare Code Editor checks that affect claim validity for K74.01.

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.

  • Chronic hepatitis C with stage 2 fibrosis

Tabular List NotesGuidance

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

Inclusion Terms

  • Hepatic fibrosis, stage F1 or stage F2

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.

    • Fibrosis, fibrotic
      • liver
        • early
    • Fibrosis, fibrotic
      • liver
        • stage
          • F1 or F2

Clinical ClassificationClinical

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

CCSR DIG019
Other specified and unspecified liver disease
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Liver Diseases

Your liver is the largest organ inside your body. It helps your body digest food, store energy, and remove poisons.

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement K74.01 replaces the following previously assigned code(s):

  • K74.0 - Hepatic fibrosis
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K74.01Overview

Is K74.01 (Hepatic fibrosis) a billable code?

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

What MS-DRG does K74.01 group to?

On inpatient claims, hepatic fibrosis, early fibrosis maps to MS-DRG 432, 433, 434, with relative weights from 0.7125 to 1.9682 depending on complications. Higher weights mean higher Medicare reimbursement.

Can K74.01 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because hepatic fibrosis, early fibrosis describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

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.