2026 ICD-10-CM Diagnosis Code K75.4Autoimmune hepatitis
ICD-10-CM Codes›K00–K95›K70-K77›K75
- Billable — Valid for Submission
- Chronic Condition
K75.4 is a billable ICD-10-CM diagnosis code for autoimmune 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 Noninfectious hepatitis.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Autoantibody negative autoimmune hepatitis
- Autoimmune hepatitis
- Autoimmune hepatitis type 1
- Autoimmune hepatitis type 2
- Autoimmune hepatitis type 3
- Autoimmune liver disease
- Bleeding esophageal varices
- Bleeding esophageal varices due to autoimmune hepatitis
- Cholangiohepatitis
- Chronic autoimmune hepatitis
- Esophageal varices associated with another disorder
- Lupus hepatitis
- Primary biliary cholangitis and/or primary sclerosing cholangitis and autoimmune hepatitis overlap syndrome
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Lupoid hepatitis NEC
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- autoimmune - K75.4
- lupoid NEC - K75.4
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Hepatitis
- autoimmune
- Hepatitis
- lupoid NEC
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Autoimmune Diseases
Your immune system protects you from disease and infection by attacking germs that get into your body, such as viruses and bacteria. Your immune system can tell that the germs aren't part of you, so it destroys them. If you have an autoimmune disease, your immune system attacks the healthy cells of your organs and tissues by mistake.
The full article covers:
- What are autoimmune diseases?
- What causes autoimmune diseases?
- Who is at risk for autoimmune diseases?
- What are the symptoms of autoimmune diseases?
- How are autoimmune diseases diagnosed?
- What are the treatments for autoimmune diseases?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K75.4 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K75.4Overview
Is K75.4 (Other inflammatory liver diseases) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report autoimmune hepatitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does K75.4 group to?
When autoimmune 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 K75.4?
Under the General Equivalence Mappings, autoimmune hepatitis converts to ICD-9-CM 571.42 (autoimmune hepatitis). 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.
