J18.1
✓ Billable
Lobar pneumonia, unspecified organism
ICD-10-CM · FY2026 · Diseases of the Respiratory System
Code
J18.1
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Respiratory System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code J18.1?
ICD-10-CM code J18.1 represents Lobar pneumonia, unspecified organism. It is a billable diagnosis code in the Diseases of the Respiratory System chapter, effective October 1, 2025 – September 30, 2026.
Is J18.1 billable?
Yes. J18.1 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is J18.1 in?
J18.1 belongs to the Diseases of the Respiratory System chapter (J00–J99) of ICD-10-CM.
Related codes in the J18 category
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