J12.3
✓ Billable
Human metapneumovirus pneumonia
ICD-10-CM · FY2026 · Diseases of the Respiratory System
Code
J12.3
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 J12.3?
ICD-10-CM code J12.3 represents Human metapneumovirus pneumonia. It is a billable diagnosis code in the Diseases of the Respiratory System chapter, effective October 1, 2025 – September 30, 2026.
Is J12.3 billable?
Yes. J12.3 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is J12.3 in?
J12.3 belongs to the Diseases of the Respiratory System chapter (J00–J99) of ICD-10-CM.
Related codes in the J12 category
J12
Viral pneumonia, not elsewhere classified
Non-billable
J12.0
Adenoviral pneumonia
Billable
J12.1
Respiratory syncytial virus pneumonia
Billable
J12.2
Parainfluenza virus pneumonia
Billable
J12.8
Other viral pneumonia
Non-billable
J12.9
Viral pneumonia, unspecified
Billable
J12.81
Pneumonia due to SARS-associated coronavirus
Billable
J12.82
Pneumonia due to coronavirus disease 2019
Billable
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