J12

ICD-10Non-billable category

Viral pneumonia, not elsewhere classified

Official ICD-10-CM descriptor (FY2026)

Viral pneumonia, not elsewhere classified

J12 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Includes

bronchopneumonia due to viruses other than influenza viruses

Excludes2

Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

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 first

Sequence the underlying condition before this code.

associated influenza, if applicable (J09.X1, J10.0-, J11.0-)

Code also

Two codes may be needed; sequencing depends on the reason for the encounter.

associated abscess, if applicable (J85.1)

More specific codes under J12

Where this code sits

Chapter: 10. Diseases of the respiratory system (J00-J99)
Block: Influenza and pneumonia (J09-J18)

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.