J18.1
✓ BillableLobar pneumonia, unspecified organism
Diseases of the respiratory system (J00-J99)
❌ Excludes1
inherited from J18Rules from parent category J18: Pneumonia, unspecified organism
- • congenital pneumonia (P23.0)
- • drug-induced interstitial lung disorder (J70.2-J70.4)
- • interstitial pneumonia NOS (J84.9)
- • neonatal aspiration pneumonia (P24.-)
- • pneumonitis due to fumes and vapors (J68.0)
- • usual interstitial pneumonia (J84.178)
⚠️ Excludes2
inherited from J18Rules from parent category J18: Pneumonia, unspecified organism
- • abscess of lung with pneumonia (J85.1)
- • aspiration pneumonia due to anesthesia during labor and delivery (O74.0)
- • aspiration pneumonia due to anesthesia during pregnancy (O29)
- • aspiration pneumonia due to anesthesia during puerperium (O89.0)
- • aspiration pneumonia due to solids and liquids (J69.-)
- • aspiration pneumonia NOS (J69.0)
- • lipid pneumonia (J69.1)
- • pneumonitis due to external agents (J67-J70)
📋 Code Instructions
from J18- • Code first: , if applicable, associated influenza (J09.X1, J10.0-, J11.0-)
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CodeJ18.1
BillableYes
ParentJ18
CategoryDiseases of the respiratory system (J00-J99)
Excludes16 rule(s)
Excludes28 note(s)
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)