2026 ICD-10-CM Diagnosis Code D89.813Graft-versus-host disease, unspecified

ICD-10-CM Codes›D50–D89›D80-D89›D89

ICD-10-CM D89.813
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D89.813 is a billable ICD-10-CM diagnosis code for graft-versus-host disease, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 808 through 810. The code is not accepted as a principal diagnosis by the Medicare Code Editor. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication of transplanted organs or tissue, initial encounter; and Immunity disorders.

Code Identity

ICD-10-CM Code
D89.813
Billable Status
Yes — Valid for Submission
Code Describes
Graft-versus-host disease, unspecified
Short Description
Graft-versus-host disease, unspecified
Same as the full description in the CMS dataset.
Parent Code
D89.81
Graft-versus-host disease

Code Classification

ChapterD50–D89Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
SectionD80-D89Certain disorders involving the immune mechanism
CategoryD89Other disorders involving the immune mechanism, not elsewhere classified
This CodeD89.813Graft-versus-host disease, unspecified

Code EditsBilling

Medicare Code Editor checks that affect claim validity for D89.813.

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.

  • Cutaneous graft-versus-host disease
  • Dry eyes
  • Graft versus host disease
  • Graft versus host disease of intestine
  • Graft versus host disease of liver
  • Graft versus host reaction
  • Graft-versus-host disease following transplant of kidney
  • Keratoconjunctivitis sicca
  • Keratoconjunctivitis sicca due to graft-versus-host disease
  • Lyell syndrome
  • Materno-fetal graft-versus-host disease
  • Nail dystrophy due to graft-versus-host disease
  • Non-infective colitis due to graft-versus-host disease
  • Noninfective enteritis of intestine due to graft-versus-host disease
  • Oral mucosal disease due to graft-versus-host disease
  • Stevens-Johnson syndrome, toxic epidermal necrolysis spectrum
  • Toxic epidermal necrolysis due to graft-versus-host disease
  • Ulcer of intestine due to graft-versus-host disease

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
      • graft-versus-host (GVH)
    • Disease, diseased
      • host-versus-graft
    • Graft-versus-host disease

Clinical ClassificationClinical

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

CCSR INJ036
Complication of transplanted organs or tissue, initial encounter
Default principal diagnosis: inpatient No · outpatient No
CCSR BLD008
Immunity disorders
Default principal diagnosis: inpatient No · outpatient Yes

Clinical InformationClinical

  • Keratoconjunctivitis Sicca

    drying and inflammation of the conjunctiva as a result of insufficient lacrimal secretion. when found in association with xerostomia and polyarthritis, it is called sjogren's syndrome.

Patient EducationClinical

Immune System and Disorders

Your immune system is a complex network of cells, tissues, and organs. Together they help the body fight infections and other diseases.

The full article covers:

  • What is the immune system?
  • What are the parts of the immune system?
  • How does the immune system work?
  • What are the types of immunity?
  • What can go wrong with the immune system?

Read the full article at MedlinePlus

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

Convert D89.813 to ICD-9-CMHistory

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

ICD-9-CM
279.50 Graft-versus-host NOS
Exact Match The mapping is direct, with no qualifiers.

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 D89.813Overview

Is D89.813 (Graft-versus-host disease) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report graft-versus-host disease, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D89.813 group to?

On inpatient claims, graft-versus-host disease, unspecified maps to MS-DRG 808, 809, 810, with relative weights from 1.0466 to 2.2079 depending on complications. Higher weights mean higher Medicare reimbursement.

Can D89.813 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because graft-versus-host disease, unspecified describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

What is the ICD-9 equivalent of D89.813?

Under the General Equivalence Mappings, graft-versus-host disease, unspecified converts to ICD-9-CM 279.50 (graft-versus-host NOS). 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.