J84.10 Pulmonary fibrosis, unspecified

Billable ICD-10-CM code, FY2026.

Applicable to

• Capillary fibrosis of lung
• Cirrhosis of lung (chronic) NOS
• Fibrosis of lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial) NOS
• Induration of lung (chronic) NOS
• Postinflammatory pulmonary fibrosis

Applies from J84 Other interstitial pulmonary diseases

Excludes1 (never code together)

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

Excludes2 (not included here)

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

Code also

• , if applicable, associated condition

Applies from J84.1 Other interstitial pulmonary diseases with fibrosis

Excludes1 (never code together)

• pulmonary fibrosis (chronic) following radiation (J70.1)

Code also

• , if applicable, pulmonary fibrosis (chronic) due to inhalation of chemicals, gases, fumes or vapors (J68.4)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 280 — Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders
• CMS-HCC V22: HCC 112 — Fibrosis of Lung and Other Chronic Lung Disorders
• RxHCC V08: HCC 227 — Pulmonary Fibrosis, Except Idiopathic
• ESRD V24: HCC 112

MS-DRG index

Defines the logic of DRG(s) 196-198 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 515 Postinflammatory pulmonary fibrosis (approximate)

Code annotations containing back-references to J84.10

Back-references to J84.10

• Code Also: J68.4 Chronic respiratory conditions due to chemicals, gases, fumes and vapors ("pulmonary fibrosis (J84.10)")
• Code First: U09.9 Post COVID-19 condition, unspecified ("pulmonary fibrosis (J84.10)")

Back-references to J84

• Code Also: I27.23 Pulmonary hypertension due to lung diseases and hypoxia ("interstitial lung disease (J84.-)")

Diagnosis Index entries for J84.10

• Block, blocked › alveolocapillary
• Cirrhosis, cirrhotic (hepatic) (liver) › lung (chronic)
• Cirrhosis, cirrhotic (hepatic) (liver) › pulmonary
• Fibrosis, fibrotic › lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial)
• Fibrosis, fibrotic › lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial) › capillary
• Fibrosis, fibrotic › lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial) › diffuse (idiopathic)
• Fibrosis, fibrotic › lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial) › diffuse (idiopathic) › chemicals, gases, fumes or vapors (inhalation)
• Fibrosis, fibrotic › lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial) › diffuse (idiopathic) › interstitial
• Fibrosis, fibrotic › lung (atrophic) (chronic) (confluent) (massive) (perialveolar) (peribronchial) › postinflammatory
• Fibrosis, fibrotic › pulmonary
• Induration, indurated › lung (black) (chronic) (fibroid)
• Syndrome › alveolocapillary block

Nearby codes

• J84.01 Alveolar proteinosis
• J84.02 Pulmonary alveolar microlithiasis
• J84.03 Idiopathic pulmonary hemosiderosis
• J84.09 Other alveolar and parieto-alveolar conditions
• J84.1 Other interstitial pulmonary diseases with fibrosis
• J84.10 Pulmonary fibrosis, unspecified (this code)
• J84.11 Idiopathic interstitial pneumonia
• J84.111 Idiopathic interstitial pneumonia, not otherwise specified
• J84.112 Idiopathic pulmonary fibrosis
• J84.113 Idiopathic non-specific interstitial pneumonitis
• J84.114 Acute interstitial pneumonitis