B44.9

HCC Category Mapping

What This Code Means

An Aspergillus fungal infection where the specific type or location has not been clearly identified or documented.

Coding Tips

• •This is a non-specific code; query the provider for more detail about the infection site (lung, sinus, disseminated, etc.)
• •Avoid using this code if more specific aspergillosis codes can be determined from the clinical documentation

Clinical Significance

Aspergillosis, unspecified, is used when the site and type of Aspergillus infection are not documented. While it still maps to the high-value opportunistic infections HCC, this code represents suboptimal documentation and should always prompt a provider query to determine the specific form of aspergillosis present.

Documentation Requirements

• ✓At minimum, confirmed Aspergillus infection via culture, antigen, or histopathology
• ✓Documentation of provider query for infection site and type
• ✓Immune status of the patient documented
• ✓Symptoms and clinical presentation recorded
• ✓Treatment plan consistent with aspergillosis management

Commonly Confused Codes