J15.8

HCC Category Mapping

What This Code Means

A lung infection caused by a specific bacterium that does not fit into the other bacterial pneumonia categories.

Coding Tips

• •Document the specific bacterial organism identified to support medical necessity
• •Review all J15 subcategories to ensure a more specific code is not available before using this code

Clinical Significance

This code captures pneumonia caused by specified bacteria not classified elsewhere in the J15 category, such as Staphylococcus aureus (non-MRSA strains covered under J15.2), Legionella, or other uncommon bacterial pathogens. Organism-specific coding demonstrates a higher level of diagnostic precision and appropriately captures illness severity for risk adjustment.

Documentation Requirements

• ✓Identification of the specific bacterial organism causing the pneumonia
• ✓Confirmation that the organism does not have its own more specific ICD-10 code
• ✓Clinical findings consistent with pneumonia: symptoms, physical exam, vital signs
• ✓Radiographic evidence of pulmonary infiltrate or consolidation
• ✓Antibiotic treatment plan targeting the identified organism

Commonly Confused Codes