ICD-10-CM Diagnosis Code (2025)
Official Description for J18
Pneumonia, unspecified organism
Coding Notes & Guidelines for J18
Excludes1: Not Coded Here
- 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)
Excludes1: Not Coded Here
- hypostatic bronchopneumonia (J18.2)
- lipid pneumonia (J69.1)
Excludes2: Not Included Here
- 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)
Excludes2: Not Included Here
- acute bronchiolitis (J21.-)
- chronic bronchiolitis (J44.89)
- other specified chronic obstructive pulmonary disease (J44.89)
Code First
, if applicable, associated influenza (J09.X1, J10.0-, J11.0-)
Inclusion Terms
- Hypostatic bronchopneumonia
- Passive pneumonia
Code Also
- , if applicable, any associated condition such as:
- aspiration pneumonia (J69.-)
Child Codes (More Specific Codes for J18):
About ICD-10-CM Code J18 (Pneumonia)
ICD-10-CM code J18 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM J18 became effective on October 1, 2024.
This page provides detailed information about J18 - Pneumonia, unspecified organism. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Pneumonia related to unspecified organism.