| J122 | Parainfluenza virus pneumonia |
| J123 | Human metapneumovirus pneumonia |
| J128 | Other viral pneumonia |
| J1281 | Pneumonia due to SARS-associated coronavirus |
| J1282 | Pneumonia due to coronavirus disease 2019 |
| J1289 | Other viral pneumonia |
| J129 | Viral pneumonia, unspecified |
| J13 | Pneumonia due to Streptococcus pneumoniae |
| J14 | Pneumonia due to Hemophilus influenzae |
| J15 | Bacterial pneumonia, not elsewhere classified |
| J150 | Pneumonia due to Klebsiella pneumoniae |
| J151 | Pneumonia due to Pseudomonas |
| J152 | Pneumonia due to staphylococcus |
| J1520 | Pneumonia due to staphylococcus, unspecified |
| J1521 | Pneumonia due to staphylococcus aureus |
| J15211 | Pneumonia due to Methicillin susceptible Staphylococcus aureus |
| J15212 | Pneumonia due to Methicillin resistant Staphylococcus aureus Pneumonia due to Methicillin resistant Staphylococcus aureus |
| J1529 | Pneumonia due to other staphylococcus |
| J153 | Pneumonia due to streptococcus, group B |
| J154 | Pneumonia due to other streptococci |
| J155 | Pneumonia due to Escherichia coli |
| J156 | Pneumonia due to other Gram-negative bacteria |
| J1561 | Pneumonia due to Acinetobacter baumannii |
| J1569 | Pneumonia due to other Gram-negative bacteria |
| J157 | Pneumonia due to Mycoplasma pneumoniae |
| J158 | Pneumonia due to other specified bacteria |
| J159 | Unspecified bacterial pneumonia |
| J16 | Pneumonia due to other infectious organisms, not elsewhere classified |
| J160 | Chlamydial pneumonia |
| J168 | Pneumonia due to other specified infectious organisms |
| J17 | Pneumonia in diseases classified elsewhere |
| J18 | Pneumonia, unspecified organism |
| J180 | Bronchopneumonia, unspecified organism |
| J181 | Lobar pneumonia, unspecified organism |
| J182 | Hypostatic pneumonia, unspecified organism |
| J188 | Other pneumonia, unspecified organism |
| J189 | Pneumonia, unspecified organism |
| J20 | Acute bronchitis |
| J200 | Acute bronchitis due to Mycoplasma pneumoniae |
| J201 | Acute bronchitis due to Hemophilus influenzae |
| J202 | Acute bronchitis due to streptococcus |
| J203 | Acute bronchitis due to coxsackievirus |
| J204 | Acute bronchitis due to parainfluenza virus |
| J205 | Acute bronchitis due to respiratory syncytial virus |
| J206 | Acute bronchitis due to rhinovirus |
| J207 | Acute bronchitis due to echovirus |
| J208 | Acute bronchitis due to other specified organisms |
| J209 | Acute bronchitis, unspecified |
| J21 | Acute bronchiolitis |
| J210 | Acute bronchiolitis due to respiratory syncytial virus |