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6834
§ 4.97 Schedule of ratings—respiratory system.

Histoplasmosis of lung

A fungal infection of the lungs that may cause cough, fever, and breathing difficulty.

What the rating means

Histoplasmosis of the lung is rated under the General Rating Formula for Mycotic Lung Disease, which covers diagnostic codes 6834 through 6839. Four rating levels are possible.

A 100% rating applies when you have chronic pulmonary mycosis with persistent fever, weight loss, night sweats, or massive hemoptysis. A 50% rating applies when chronic pulmonary mycosis requires suppressive therapy and you have no more than minimal symptoms, such as occasional minor hemoptysis or productive cough. A 30% rating applies when chronic pulmonary mycosis causes minimal symptoms, such as occasional minor hemoptysis or productive cough, without the need for suppressive therapy. A 0% rating applies when mycotic lesions are healed, inactive, and you have no symptoms.

The key differences between levels are whether your disease is still active, whether it requires ongoing suppressive treatment, and whether you have systemic symptoms like fever, weight loss, or night sweats.

Evidence that helps

For the 100% level, medical records documenting persistent fever, significant unintended weight loss, night sweats, or massive hemoptysis tied to active chronic pulmonary mycosis would directly support that rating. Hospitalization records, infectious disease notes, and lab or imaging findings showing active disease are relevant.

For the 50% level, records showing that a provider has prescribed long-term antifungal suppressive therapy are central. Treatment logs, pharmacy records, and clinic notes reflecting ongoing medication management help demonstrate this, along with records of any minor hemoptysis or productive cough.

For the 30% level, medical records confirming active mycosis with occasional minor hemoptysis or productive cough, but without suppressive therapy, support this rating. Pulmonologist or primary care notes describing symptom frequency and severity are useful.

For the 0% level, imaging such as chest X-rays or CT scans showing healed or calcified lesions, combined with provider notes confirming you are asymptomatic, reflect that rating. Your own statements describing how any remaining symptoms affect your daily life and work can also help VA understand your functional picture at any level.

Secondary conditions

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.