ICD10

ICD-10 Code D89.81: Graft-versus-host disease

D89.81 is an ICD-10 diagnosis entry used to group records related to Graft-versus-host disease. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).

When is it used?

  • May be used when a clinician documents graft-versus-host disease in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
  • This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter
3Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
block
D80-D89Certain disorders involving the immune mechanism
category
D89Other disorders involving the immune mechanism, not elsewhere classified
category
D89.8Other specified disorders involving the immune mechanism, not elsewhere classified
currentD89.8

Official coding notes

Applicable to
  • code to identify associated manifestations, such as:
  • desquamative dermatitis (L30.8)
  • diarrhea (R19.7)
  • elevated bilirubin (R17)
  • hair loss (L65.9)
  • underlying cause, such as:
  • complications of transplanted organs and tissue (T86.-)
  • complications of blood transfusion (T80.89)
Code first
  • underlying cause, such as:
  • complications of transplanted organs and tissue (T86.-)
  • complications of blood transfusion (T80.89)
Use additional code
  • code to identify associated manifestations, such as:
  • desquamative dermatitis (L30.8)
  • diarrhea (R19.7)
  • elevated bilirubin (R17)
  • hair loss (L65.9)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

HematologistGeneral Physician

Coding guidelines

Common synonyms

Graft-versus-host disease

Frequently asked questions

Code details

CodeD89.81
SystemICD10
Display nameGraft-versus-host disease
ChapterDiseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
BlockCertain disorders involving the immune mechanism

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code D89.81 for Graft-versus-host disease | HealthAssure