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6320
§ 4.88b Schedule of ratings—infectious diseases, immune disorders and nutritional deficiencies.

Loiasis (African eye worm)

Filarial infection by the African eye worm (Loa loa)

What the rating means

Loiasis, also called African eye worm, is rated under Diagnostic Code 6320 as a parasitic disease otherwise not specified. VA applies the General Rating Formula for Infectious Diseases. While the disease is active, the rating is 100%. Once active disease has resolved, VA assigns 0% for the infection itself. Any lasting health problems caused by the infection are then rated separately under the body system they affect — for example, eye damage would be rated under the vision schedule. This means your overall disability rating after recovery depends entirely on what residual conditions remain and how severely they affect that body system.

Rating levels

  • 100% — For active disease
  • 0% — After active disease has resolved, rate at 0 percent for infection. Rate any residual disability of infection within the appropriate body system.

VA doesn't add ratings together. It combines them using the table in 38 CFR § 4.25, so two ratings usually total less than their sum.

Evidence that helps

During active disease, medical records confirming an ongoing loiasis infection — such as lab results, physician notes, or parasite identification — are the core evidence for a 100% rating. Once the infection resolves, evidence of any remaining damage becomes what matters most. Records showing lasting effects on a specific body system, such as eye or neurological findings documented by a treating provider, support a residual disability rating. A VA examination that measures the severity of those residuals in the affected body system is also relevant. Statements from you or people who know you, describing how remaining symptoms affect your work and daily life, can help show the functional impact of any residual disability.

VA exam form (DBQ) for this condition:

Presumptive conditions

If your service meets the rules below, VA presumes this condition is connected to it.

  • Tropical disease — 38 CFR § 3.309(b)
  • Prisoner of war — 38 CFR § 3.309(c)

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.