Graft Versus Host Disease

Effective October 1, 2008 category 279.5, Disorders involving the immune mechanism, has been created for graft versus host (GVH) disease, the reaction to donated stem cells. GVH disease occurs most often as a complication of bone marrow transplant, so it was classified to code 996.85, Complications of transplanted organ, bone marrow. However, GVH disease may rarely occur following blood transfusion or any organ transplant where white blood cells are present. GVH disease results when donor cells that are responsible for the body’s immune response (T lymphocytes) attack the cells of the recipient. Even when...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article covers graft-versus-host disease as a clinical complication and as an ICD-9-CM coding topic. It explains the condition’s general clinical context, discusses its relationship to transplant and transfusion settings, and outlines the coding changes introduced for the diagnosis category and related subcategories. The article is relevant to coders, CDI staff, and reimbursement professionals working with transplant-related diagnoses and immune mechanism disorders.

Why This Topic Matters

Graft-versus-host disease can appear in transplant and transfusion contexts, and the article shows how that diagnosis was organized within ICD-9-CM. Understanding the topic helps coding professionals recognize the relevant diagnosis category, related manifestations, and the broader transplant complication framework.

Article Sections

  1. Clinical overview of graft-versus-host disease

    This section describes the condition in general terms, including when it can occur and the broad clinical settings in which it is seen. It also summarizes the acute and chronic forms at a high level.

  2. ICD-9-CM coding update for graft-versus-host disease

    This section presents the ICD-9-CM category placement and the new subcategory structure for graft-versus-host disease. It also notes related coding context for underlying causes and associated manifestations.

  3. Clinical example and code assignment question

    This section provides a transplant-related case scenario and asks for diagnosis and procedure code assignments. It is presented as an applied example tied to the topic of graft-versus-host disease.

What You Will Learn

  • How graft-versus-host disease is discussed in relation to transplant and transfusion settings
  • What ICD-9-CM category changes were made for graft-versus-host disease
  • Which related diagnosis categories and manifestation types are mentioned in the coding context
  • How the article frames a transplant-related example for coding review

Who Should Read This

  • Medical coders
  • Coding educators
  • Clinical documentation improvement professionals
  • Revenue cycle staff
  • Transplant-related billing teams

Codes Discussed

  • ICD-9-CM: 279.5
  • ICD-9-CM: 996.85
  • ICD-9-CM: 279.50
  • ICD-9-CM: 279.51
  • ICD-9-CM: 279.52
  • ICD-9-CM: 279.53
  • ICD-9-CM: 996.82
  • ICD-9-CM: 709.8
  • ICD-9-CM: 787.91
  • ICD-9-CM: 789.59
  • ICD-9-CM: 695.89
  • ICD-9-CM: 782.4
  • ICD-9-CM: 704.09
  • ICD-9-CM: 999.8

Code Ranges Discussed

  • ICD-9-CM: 996.80-996.89

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