diff --git a/app/routes/automation.py b/app/routes/automation.py
index 12296f1..6c1c15d 100644
--- a/app/routes/automation.py
+++ b/app/routes/automation.py
@@ -107,13 +107,30 @@ async def preview_automation(
     grupos = agrupar_por_recepcion(rows_rda)
     total_examenes = sum(len(v) for v in grupos.values())
 
+    # Agrupar RDA por COD_PACIENTE
+    rda_por_pac = {}
+    for id_rec, filas in grupos.items():
+        cod = str(filas[0].get("COD_PACIENTE", ""))
+        if cod not in rda_por_pac:
+            rda_por_pac[cod] = []
+        rda_por_pac[cod].append({
+            "id_recepcion": id_rec,
+            "factura": f"{str(filas[0].get('PREFIJO', '')).strip()}-{filas[0].get('NUM_FACTURA', '')}",
+            "fecha": str(filas[0].get("FECHA_RECEPCION", ""))[:10],
+            "examenes": len(filas),
+            "valor": float(filas[0].get("VALORTOTAL") or 0),
+            "diag": str(filas[0].get("DIAG_PPAL") or ""),
+        })
+
     pacientes_preview = [
         {
+            "codigo": str(p.get("CODIGO", "")),
             "doc": str(p.get("DOCIDENT", "")),
             "nombre": f"{p.get('NOMBRES', '')} {p.get('APELLIDOS', '')}".strip(),
             "tipo": str(p.get("TIPOIDENT", "")),
+            "rda": rda_por_pac.get(str(p.get("CODIGO", "")), []),
         }
-        for p in rows_pac[:10]
+        for p in rows_pac
     ]
 
     return JSONResponse({
@@ -123,7 +140,6 @@ async def preview_automation(
         "recepciones": len(grupos),
         "examenes": total_examenes,
         "pacientes_preview": pacientes_preview,
-        "hay_mas": len(rows_pac) > 10,
     })
 
 
diff --git a/app/templates/automation.html b/app/templates/automation.html
index 94f8cfb..21018c5 100644
--- a/app/templates/automation.html
+++ b/app/templates/automation.html
@@ -58,8 +58,8 @@
         </div>
       </div>
       <div>
-        <p class="text-xs font-medium text-gray-600 mb-2">Primeros pacientes:</p>
-        <div id="preview-table" class="divide-y divide-gray-100 border border-gray-100 rounded-lg overflow-hidden text-sm"></div>
+        <p class="text-xs font-medium text-gray-600 mb-2">Pacientes — haz clic para ver sus recepciones:</p>
+        <div id="preview-table" class="border border-gray-100 rounded-lg overflow-hidden text-sm"></div>
       </div>
     </div>
   </div>
@@ -129,16 +129,35 @@ async function previewAutomation() {
       table.innerHTML = '<div class="p-4 text-gray-400 text-center">No hay pacientes para esta fecha</div>';
       showToast('No hay datos para esa fecha', 'warning');
     } else {
-      table.innerHTML = data.pacientes_preview.map(p => `
-        <div class="flex items-center gap-3 px-4 py-2 text-sm hover:bg-gray-50">
-          <span class="text-gray-400 text-xs w-8">${p.tipo}</span>
-          <span class="text-gray-500 w-32 font-mono">${p.doc}</span>
-          <span class="text-gray-700 flex-1">${p.nombre}</span>
-        </div>
-      `).join('') + (data.hay_mas ? '<div class="px-4 py-2 text-xs text-gray-400">... y más pacientes</div>' : '');
+      table.innerHTML = data.pacientes_preview.map((p, i) => {
+        const rdaRows = p.rda.map(r => `
+          <div class="flex items-center gap-3 px-6 py-1.5 bg-blue-50 border-t border-blue-100 text-xs">
+            <span class="text-blue-400 w-4"><i class="fas fa-flask"></i></span>
+            <span class="font-mono text-blue-700 w-28">${r.factura}</span>
+            <span class="text-blue-600 w-24">${r.fecha}</span>
+            <span class="text-blue-600 w-20">${r.examenes} examen(es)</span>
+            <span class="text-blue-600 flex-1">${r.diag}</span>
+            <span class="text-blue-700 font-medium">$${r.valor.toLocaleString('es-CO')}</span>
+          </div>`).join('');
+
+        return `
+          <div class="divide-y divide-gray-100">
+            <div class="flex items-center gap-3 px-4 py-2.5 hover:bg-gray-50 cursor-pointer select-none"
+                 onclick="toggleRda('rda-${i}', this)">
+              <i class="fas fa-chevron-right text-gray-300 text-xs transition-transform duration-150" id="chev-${i}"></i>
+              <span class="text-gray-400 text-xs w-8">${p.tipo}</span>
+              <span class="text-gray-500 w-32 font-mono text-xs">${p.doc}</span>
+              <span class="text-gray-700 flex-1">${p.nombre}</span>
+              <span class="text-xs ${p.rda.length > 0 ? 'text-blue-600' : 'text-gray-300'}">
+                ${p.rda.length} RDA
+              </span>
+            </div>
+            <div id="rda-${i}" class="hidden">${rdaRows || '<div class="px-6 py-2 text-xs text-gray-400 bg-gray-50">Sin recepciones en esta fecha</div>'}</div>
+          </div>`;
+      }).join('');
 
       document.getElementById('btn-run').disabled = false;
-      showToast(`${data.pacientes} paciente(s) y ${data.recepciones} recepción(es) encontradas`, 'success');
+      showToast(`${data.pacientes} paciente(s) · ${data.recepciones} recepción(es)`, 'success');
     }
 
     document.getElementById('preview-section').classList.remove('hidden');
@@ -206,6 +225,14 @@ async function runAutomation() {
   }
 }
 
+function toggleRda(id, row) {
+  const div = document.getElementById(id);
+  const chev = row.querySelector('[id^="chev-"]');
+  const hidden = div.classList.contains('hidden');
+  div.classList.toggle('hidden', !hidden);
+  if (chev) chev.style.transform = hidden ? 'rotate(90deg)' : '';
+}
+
 function renderBadge(id, enviados, errores) {
   const el = document.getElementById(id);
   if (errores === 0) {