J12.3
✓ BillableHuman metapneumovirus pneumonia
Diseases of the respiratory system (J00-J99)
⚠️ Excludes2
inheritedRules inherited from parent codes.
- • 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)
- • congenital pneumonia (P23.0)
- • congenital rubella pneumonitis (P35.0)
- • interstitial pneumonia NOS (J84.9)
- • lipid pneumonia (J69.1)
- • neonatal aspiration pneumonia (P24.-)
📋 Code Instructions
inherited- • Code first: associated influenza, if applicable (J09.X1, J10.0-, J11.0-)
Clinical Description
ICD-10-CM code J12.3 represents human metapneumovirus pneumonia. This code falls under the Diseases of the respiratory system (J00-J99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code J12.3?
ICD-10-CM code J12.3 is "Human metapneumovirus pneumonia". It belongs to the category: Diseases of the respiratory system (J00-J99).
Is J12.3 a billable ICD-10 code?
Yes, J12.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Can J12.3 be coded with other codes?
J12.3 has 10 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in J12
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)