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J84.2

J84.2: Lymphoid interstitial pneumonia

Billable / specific codeICD-10-CM

J84.2 is a billable, specific ICD-10-CM code for lymphoid interstitial pneumonia. It is valid for submission on a claim.

Check J84.2 with the rest of the claim: free scrubber

Inclusion terms

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

  • Lymphoid interstitial pneumonitis

Excludes1 inherited from the categories above J84.2

A category’s note binds every code beneath it.

Written on J84: Other interstitial pulmonary diseases

  • drug-induced interstitial lung disorders (J70.2-J70.4)
  • interstitial emphysema (J98.2)

Excludes2 inherited from the categories above J84.2

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

Written on J84: Other interstitial pulmonary diseases

  • lung diseases due to external agents (J60-J70)

Other codes that can never be billed with J84.2

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

  • J70.2Acute drug-induced interstitial lung disorders
  • J70.3Chronic drug-induced interstitial lung disorders
  • J70.4Drug-induced interstitial lung disorders, unspecified
  • J84.11Idiopathic interstitial pneumonia
  • J84.89Other specified interstitial pulmonary diseases

Risk adjustment

J84.2 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

J84.2 is named in 13 Medicare coverage policies: 13 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
  • A56730Billing and Coding: Respiratory Therapy and Oximetry Services
  • A56784Billing and Coding: Pulmonary Stress Testing

Alphabetic index entries that lead here

  • Pneumonia›lymphoid interstitial
  • Pneumonitis›lymphoid, interstitial
  • Pneumonia›interstitial›lymphoid
  • Pneumonitis›interstitial›lymphoid

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under J84

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.