J18.9 ICD-10-CM Code: Pneumonia, unspecified organism
J18.9 is the billable ICD-10-CM code for “Pneumonia, unspecified organism” in the FY 2027 U.S. code set, effective Oct 1, 2026.
Official description
J18.9Pneumonia, unspecified organism
ICD-10-CM diagnosis code · United States clinical modification
Where J18.9 sits
- 1
Chapter 10
Diseases of the respiratory system (J00-J99)
- 2
Section
Influenza and pneumonia (J09-J18)
- 3
Category J18
Pneumonia, unspecified organism
- 4
Code J18.9
Pneumonia, unspecified organism
Notes for this code
Inclusion terms
No inclusion terms are listed for J18.9.
Code first
No “code first” instruction is listed for J18.9.
Use additional code
No “use additional code” instruction is listed for J18.9.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for J18.9.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for J18.9.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code J18.9 mean?
J18.9 is the FY 2027 U.S. ICD-10-CM code for “Pneumonia, unspecified organism.”
Is J18.9 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, J18.9 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is J18.9 located in ICD-10-CM?
J18.9 is listed in Chapter 10, Diseases of the respiratory system (J00-J99), within Influenza and pneumonia (J09-J18) (J09–J18), under category J18, Pneumonia, unspecified organism.
What coding notes are listed for J18.9?
No inclusion terms are listed for J18.9 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.