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J44.81

J44.81: Bronchiolitis obliterans and bronchiolitis obliterans syndrome

Billable / specific codeICD-10-CM

J44.81 is a billable, specific ICD-10-CM code for bronchiolitis obliterans and bronchiolitis obliterans syndrome. It is valid for submission on a claim.

Check J44.81 with the rest of the claim: free scrubber

Code first

The underlying condition must be sequenced before this code.

  • , 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

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

  • , 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)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Obliterative bronchiolitis

Excludes2 inherited from the categories above J44.81

Not part of this code, but both may be coded when both are present.

Written on J44: Other chronic obstructive pulmonary disease

  • bronchiectasis (J47.-)
  • chronic bronchitis NOS (J42)
  • chronic simple and mucopurulent bronchitis (J41.-)
  • chronic tracheitis (J42)
  • chronic tracheobronchitis (J42)
  • emphysema without chronic bronchitis (J43.-)

Other codes that can never be billed with J44.81

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • J42Unspecified chronic bronchitis

Risk adjustment

J44.81 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 280 Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders0.319 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

J44.81 is named in 10 Medicare coverage policies: 9 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which one applies depends on your Medicare contractor.

  • A56566Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
  • A52466Nebulizers - Policy Article
  • A56152Billing and Coding: Pulmonary Rehabilitation Services
  • A56717Billing and Coding: Respiratory Therapy (Respiratory Care)

Alphabetic index entries that lead here

  • Bronchiolitis›fibrosa obliterans
  • Bronchiolitis›obliterans
  • Bronchiolitis›obliterative(chronic) (subacute)
  • Syndrome›bronchiolitis obliterans
  • Bronchiolitis›chronic›obliterative
  • Bronchiolitis›obliterans›syndrome
  • Bronchiolitis›obliterative›due to chemicals, gases, fumes or vapors(inhalation)
  • Bronchiolitis›obliterative›due to fumes or vapors
  • Syndrome›obliterans›bronchiolitis

The condition this code belongs to

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under J44.8

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.