Inflammation of the nasal passages with granuloma formation, often from autoimmune or infectious causes.
Because the rating under this code depends on the specific type of granulomatous condition, the most important evidence is medical records that clearly state your diagnosis. A pathology or biopsy report that confirms Wegener's granulomatosis or lethal midline granuloma would support the 100% level. Imaging studies, lab work, and specialist notes from a rheumatologist, pulmonologist, or ear-nose-and-throat physician can all help document the nature and extent of the condition.
For the 20% level, medical records confirming a granulomatous infection of the nose that does not meet the criteria above would be the key evidence. Records showing how the condition affects your breathing, daily activities, or ability to work may also be relevant to your overall claim, though the rating at this level does not vary by severity within that category.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.
