J12
Viral pneumonia, not elsewhere classified
J12 is a non-billable ICD-10-CM code category for viral pneumonia, not elsewhere classified. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are J12.0 Adenoviral pneumonia, J12.1 Respiratory syncytial virus pneumonia, J12.2 Parainfluenza virus pneumonia, J12.3 Human metapneumovirus pneumonia and 2 more. Its coding notes include a Code first instruction, a Use additional code instruction, a Code also instruction and 28 Excludes2 entries.
Code first
If the underlying condition listed here is present and known, sequence it first.
Use additional code
Add the listed code as a secondary code, if known.
Also from chapter/block level (8 notes)
- code, if applicable, to identify resistance to antimicrobial drugs (Z16.-)
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
- associated abscess, if applicable (J85.1)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- 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.-)
Also from chapter/block level (18 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- smoke inhalation (T59.81-)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Includes
Further defines or gives examples of the content of the category.
- bronchopneumonia due to viruses other than influenza viruses
Notes
Also from chapter/block level (1 note)
- When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).