feat: chatbot CDT lookup — SRP quad, 4-digit auto-prefix, quad field to Selenium

- parseSrpCode: recognize "D4341 UL" / "4341 LR" etc., store quadrant in quad field
- matchOne: auto-prefix D for 4-digit inputs like "0120" → D0120
- LLM prompt: keep SRP code and quadrant together as one procedureName entry
- CdtMatch / CdtResult: add quad field, thread through matchedCodes action data
- claim-form.tsx: include quad in chatbot_claim_prefill type and spread to service line
- selenium_claimSubmitWorker.py: pass quad to fill_service_line, select quadrant
  dropdown by index (UR=1, UL=2, LL=3, LR=4) matching MassHealth form structure

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Backend/src/ai/cdt-lookup.ts

@@ -19,6 +19,7 @@ interface CdtMatch {
   input: string;
   toothNumber?: string;
   toothSurface?: string;
+  quad?: string;
 }
 
 // Load once at module init
@@ -284,6 +285,21 @@ function parseCompositeCode(input: string): CdtMatch | null {
   return { code, description: row?.Description ?? code, input, toothNumber: String(toothNum), toothSurface: surfaces.toUpperCase() };
 }
 
+/**
+ * Parse SRP code with quadrant: "D4341 UL", "4341 LR", "D4342 UR", etc.
+ * UL/UR/LL/LR only appear with D4341 or D4342.
+ */
+function parseSrpCode(input: string): CdtMatch | null {
+  const m = input.trim().match(/^(D?4341|D?4342)\s+(UL|UR|LL|LR)$/i);
+  if (!m) return null;
+  const base = m[1]!.toUpperCase();
+  const codeStr = base.startsWith("D") ? base : "D" + base;
+  const quadrant = m[2]!.toUpperCase();
+  const row = ALL_CODES.find((r) => r["Procedure Code"].toUpperCase() === codeStr);
+  if (!row) return null;
+  return { code: codeStr, description: row.Description, input, quad: quadrant };
+}
+
 /**
  * Parse RCT/root-canal notation like "rct #29", "#14 rct", "root canal #6".
  * Returns D3310 (anterior), D3320 (premolar), or D3330 (molar) based on tooth number.
@@ -352,6 +368,14 @@ function matchOne(input: string): CdtMatch | null {
     return { code, description: row?.Description ?? code, input };
   }
 
+  // 4-digit shorthand: auto-prefix "D" (e.g. "0120" → "D0120")
+  if (/^\d{4}$/.test(cleaned)) {
+    const withD = "D" + cleaned;
+    const row = ALL_CODES.find((r) => r["Procedure Code"].toUpperCase() === withD.toUpperCase());
+    const code = row?.["Procedure Code"] ?? withD.toUpperCase();
+    return { code, description: row?.Description ?? code, input };
+  }
+
   // Apply alias before tokenizing
   const normalized = ALIAS_MAP[cleaned] ?? cleaned;
   const queryTokens = normalized
@@ -420,6 +444,10 @@ export function lookupCdtCodes(
     const rctMatch = parseRctCode(name);
     if (rctMatch) return rctMatch;
 
+    // 2c. SRP + quadrant — D4341/D4342 with UL/UR/LL/LR
+    const srpMatch = parseSrpCode(name);
+    if (srpMatch) return srpMatch;
+
     // 3. Hardcoded direct code map (short abbreviations / codes not in MH schedule)
     const directKey = DIRECT_CODE_MAP[cleaned] ? cleaned : DIRECT_CODE_MAP[strippedCleaned] ? strippedCleaned : null;
     if (directKey) {

apps/Backend/src/ai/internal-chat-graph.ts

@@ -101,6 +101,8 @@ Rules:
   e.g. "composite #29 O", "#8 MO", "composite #11 MOD" — keep the #number and surface letters together as one entry
 - For RCT/root canal with a tooth number, preserve the tooth# in the entry:
   e.g. "rct #29", "#14 root canal", "rct #6" — keep the #number with the procedure so the correct code can be selected
+- For SRP with a quadrant abbreviation (UL, UR, LL, LR), keep the code and quadrant together as one entry:
+  e.g. "D4341 UL", "4341 LR", "D4342 UR" — the quadrant always travels with the SRP code
 - For multiple PA X-rays with tooth numbers, expand each PA into its own entry:
   "1 pa, #T" for the first tooth, "2nd pa, #T" for each additional tooth
   e.g. "2 PA (#30, 15)" → ["1 pa, #30", "2nd pa, #15"]

apps/Backend/src/ai/internal-chat-workflow.ts

@@ -35,6 +35,7 @@ export interface CdtResult {
   input: string;
   toothNumber?: string;
   toothSurface?: string;
+  quad?: string;
 }
 
 export interface ChatResponse {
@@ -467,8 +468,9 @@ async function handleCheckAndClaim(
       siteKey,
       autoCheck: siteKeyToAutoCheck(siteKey),
       cdtResults,
-      matchedCodes: matched.map((r) => ({ code: r.code!, description: r.description, toothNumber: r.toothNumber, toothSurface: r.toothSurface })),
+      matchedCodes: matched.map((r) => ({ code: r.code!, description: r.description, toothNumber: r.toothNumber, toothSurface: r.toothSurface, quad: r.quad })),
       serviceDate: c.appointmentDate ?? null,
+      renderingProvider: c.renderingProvider ?? null,
     },
   };
 }
@@ -550,7 +552,7 @@ async function handleClaimOnly(
           actionData: {
             patient,
             siteKey: resolveSiteKey(patient.insuranceProvider ?? null, c.insuranceHint ?? null) ?? "MH",
-            matchedCodes: matched.map((r) => ({ code: r.code!, description: r.description, toothNumber: r.toothNumber, toothSurface: r.toothSurface })),
+            matchedCodes: matched.map((r) => ({ code: r.code!, description: r.description, toothNumber: r.toothNumber, toothSurface: r.toothSurface, quad: r.quad })),
             options: [
               { label: fmtUTC(sorted[0]), appointmentId: sorted[0].id, serviceDate: isoUTC(sorted[0]) },
               { label: fmtUTC(sorted[1]), appointmentId: sorted[1].id, serviceDate: isoUTC(sorted[1]) },
@@ -593,7 +595,7 @@ async function handleClaimOnly(
       siteKey,
       serviceDate,
       appointmentId,
-      matchedCodes: matched.map((r) => ({ code: r.code!, description: r.description, toothNumber: r.toothNumber, toothSurface: r.toothSurface })),
+      matchedCodes: matched.map((r) => ({ code: r.code!, description: r.description, toothNumber: r.toothNumber, toothSurface: r.toothSurface, quad: r.quad })),
       renderingProvider: c.renderingProvider ?? null,
     },
   };

apps/Backend/src/routes/claims.ts

@@ -825,6 +825,7 @@ router.post(
                 insuranceSiteKey: "DDMA",
                 massddmaUsername: credentials.username,
                 massddmaPassword: credentials.password,
+                providerName: resolvedNpiProvider?.providerName ?? "",
               },
             };
             jobId = enqueueSeleniumJob({

apps/Backend/src/routes/insuranceStatusDDMAClaim.ts

@@ -40,16 +40,20 @@ router.post("/ddma-claim", async (req: Request, res: Response): Promise<any> =>
       });
     }
 
-    // Fetch NPI providers to pick the target provider on the DDMA portal
+    // Use provider from the claim form if set; fall back to Provider #1 (default)
     const npiProviders = await storage.getNpiProvidersByUser(req.user.id);
-    const primaryProvider = npiProviders[0]; // sorted by sortOrder asc, then id asc
+    const primaryProvider = npiProviders[0];
+    const providerName =
+      (claimData.npiProvider?.providerName as string | undefined)?.trim() ||
+      primaryProvider?.providerName ||
+      "";
 
     const enrichedPayload = {
       claim: {
         ...claimData,
         massddmaUsername: credentials.username,
         massddmaPassword: credentials.password,
-        providerName: primaryProvider?.providerName ?? "",
+        providerName,
       },
     };