J44.81

Billable

ChapterJ00–J99

Ranksubcategory

Official Description

Bronchiolitis obliterans and bronchiolitis obliterans syndrome

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 10: Diseases of the Respiratory System (J00-J99).

Instructional Notes

Includes

Obliterative bronchiolitis

Code First

, if applicable:
complication of bone marrow transplant (T86.09)
complication of stem cell transplant (T86.5)
heart-lung transplant rejection (T86.31)
lung transplant rejection (T86.810)
other complications of heart-lung transplant (T86.39)
other complications of lung transplant (T86.818)

Code Also

, if applicable, associated conditions, such as:
chronic graft-versus-host disease (D89.811)
chronic lung allograft dysfunction (J4A.-)
chronic respiratory conditions due to chemicals, gases, fumes and vapors (J68.4)

General instructions are available for the parent sections:

View CH10 Notes View J40-J4A Notes View J44 Notes

Clinical Hierarchy

CH10Diseases of the respiratory system (J00-J99)

J40-J4AChronic lower respiratory diseases (J40-J4A)

J44Other chronic obstructive pulmonary disease

J44.8Other specified chronic obstructive pulmonary disease

J44.81Bronchiolitis obliterans and bronchiolitis obliterans syndrome

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to J44.81:

categoryJ44

Other chronic obstructive pulmonary disease

View context instructions

blockJ40-J4A

Chronic lower respiratory diseases (J40-J4A)

View context instructions

chapterCH10

Diseases of the respiratory system (J00-J99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to J44.81. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

9 raw paths

Bronchiolitis (acute) (infective) (subacute)7 unique routes

chronic (fibrosing)

obliterative→J44.81

fibrosa obliterans→J44.81

obliterans→J44.81(2 variants)

syndrome→J44.81

obliterative (chronic) (subacute)→J44.81(3 variants)

due to chemicals, gases, fumes or vapors (inhalation)→J44.81

due to fumes or vapors→J44.81

Syndrome2 unique routes

bronchiolitis obliterans→J44.81