ICD-10-CM 2027
ICD-10 code for lung disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › lung”. Page updated September 29, 2026.
About coding lung disease
The ICD-10-CM code for lung disease is J98.4 (Other disorders of lung). The official index lists 37 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J98.4.
Within J98, choose J98.4 (Other disorders of lung) only when documentation doesn't support a more specific option: diseases of bronchus, not elsewhere classified (J98.0), pulmonary collapse (J98.1), interstitial emphysema (J98.2), Compensatory emphysema (J98.3), diseases of mediastinum, not elsewhere classified (J98.5), disorders of diaphragm (J98.6), other specified respiratory disorders (J98.8) and respiratory disorder, unspecified (J98.9).
Don't report J98.4 together with the conditions in its Excludes1 note: acute interstitial pneumonitis (J84.114) and pulmonary insufficiency following surgery (J95.1-J95.2).
Use an additional code to identify: exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and 1 more.
More specific lung disease codes (official index)
- black J60 — Coalworker's pneumoconiosis
- congenital Q33.9 — Congenital malformation of lung, unspecified
- cystic J98.4 — Other disorders of lung
- congenital Q33.0 — Congenital cystic lung
- dabbing (related) U07.0 — Vaping-related disorder
- electronic cigarette (related) U07.0 — Vaping-related disorder
- fibroid (chronic)
- fluke B66.4 — Paragonimiasis
- oriental B66.4 — Paragonimiasis
- in
- amyloidosis E85.4 — Organ-limited amyloidosis
- sarcoidosis D86.0 — Sarcoidosis of lung
- Sjögren's syndrome M35.02 — Sjogren syndrome with lung involvement
- systemic
- lupus erythematosus M32.13 — Lung involvement in systemic lupus erythematosus
- sclerosis M34.81 — Systemic sclerosis with lung involvement
- interstitial J84.9 — Interstitial pulmonary disease, unspecified
- with progressive fibrotic phenotype, in diseases classified elsewhere J84.170 — Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere
- drug-induced
- of childhood, specified NEC J84.848 — Other interstitial lung diseases of childhood
- drug-induced
- respiratory bronchiolitis J84.115 — Respiratory bronchiolitis interstitial lung disease
- specified NEC J84.89 — Other specified interstitial pulmonary diseases
- obstructive (chronic) J44.9 — Chronic obstructive pulmonary disease, unspecified
- with
- acute
- bronchitis J44.0 — Chronic obstructive pulmonary disease with (acute) lower respiratory infection
- exacerbation NEC J44.1 — Chronic obstructive pulmonary disease with (acute) exacerbation
- lower respiratory infection J44.0 — Chronic obstructive pulmonary disease with (acute) lower respiratory infection
- alveolitis, allergic J67.9 — Hypersensitivity pneumonitis due to unspecified organic dust
- asthma J44.89 — Other specified chronic obstructive pulmonary disease
- bronchiectasis J47.9 — Bronchiectasis, uncomplicated
- with
- exacerbation (acute) J47.1 — Bronchiectasis with (acute) exacerbation
- lower respiratory infection J47.0 — Bronchiectasis with acute lower respiratory infection
- bronchitis J44.89 — Other specified chronic obstructive pulmonary disease
- with
- exacerbation (acute) J44.1 — Chronic obstructive pulmonary disease with (acute) exacerbation
- lower respiratory infection J44.0 — Chronic obstructive pulmonary disease with (acute) lower respiratory infection
- emphysema J43.9 — Emphysema, unspecified
- hypersensitivity pneumonitis J67.9 — Hypersensitivity pneumonitis due to unspecified organic dust
- decompensated J44.1 — Chronic obstructive pulmonary disease with (acute) exacerbation
- with
- exacerbation (acute) J44.1 — Chronic obstructive pulmonary disease with (acute) exacerbation
- polycystic J98.4 — Other disorders of lung
- congenital Q33.0 — Congenital cystic lung
- rheumatoid (diffuse) (interstitial)
- vaping (associated) (device) (product) (use) U07.0 — Vaping-related disorder
Don't confuse with (Excludes1 for J98.4)
Common questions about lung disease ICD-10 codes
What is the ICD-10 code for lung disease?
- J98.4 — Other disorders of lung. More specific codes apply when the documentation supports them: J60, Q33.9, J98.4, Q33.0 and others below.
What is the ICD-10 code for black lung disease?
- J60 — Coalworker's pneumoconiosis.
What is the ICD-10 code for congenital lung disease?
- Q33.9 — Congenital malformation of lung, unspecified.
What is the ICD-10 code for cystic lung disease?
- J98.4 — Other disorders of lung.
What is the ICD-10 code for dabbing lung disease?
- U07.0 — Vaping-related disorder.
What is the ICD-10 code for electronic cigarette lung disease?
- U07.0 — Vaping-related disorder.
What is the ICD-10 code for fluke lung disease?
- B66.4 — Paragonimiasis.
Is J98.4 billable?
- Yes. J98.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J98.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J98.4 as a principal diagnosis.
Is J98.4 a CC or MCC?
- No. J98.4 is neither a CC nor an MCC under MS-DRG v44.0.