Parasitic infection (Entamoeba histolytica) causing dysentery and liver abscesses
Because your rating depends on which disability picture predominates, the evidence you gather should reflect whichever formula applies to your situation.
If your predominant disability involves adhesion-like symptoms under DC 7301, useful evidence includes a healthcare provider's determination that symptomatic peritoneal adhesions are present, records documenting abdominal pain, nausea, vomiting, colic, constipation, or diarrhea, hospitalization records showing at least one admission for obstruction in the past year, dietary restriction orders from a provider, and, at the most severe level, records showing inoperable obstruction or a prescription for total parenteral nutrition.
If your predominant disability involves biliary tract symptoms under DC 7314, useful evidence includes clinical documentation of each attack of right upper quadrant pain with nausea and vomiting, along with dates, so VA can count episodes within the past 12 months. Records of any biliary tract dilation procedures with dates are also relevant.
If your predominant disability involves post-cholecystectomy complications under DC 7318, useful evidence includes provider notes documenting recurrent or intermittent abdominal pain and records showing the frequency and character of diarrhea. Your own statements describing how symptoms affect your daily eating, sleep, and activities can help show severity across all three formulas.
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.
