diff --git a/web/js/issue-id.js b/web/js/issue-id.js
new file mode 100644
index 0000000..80b912b
--- /dev/null
+++ b/web/js/issue-id.js
@@ -0,0 +1,84 @@
+export const BLANK_ISSUE_ID = 'BLANK-000000';
+
+const ISSUE_ID_CORE_PATTERN = '[A-Z][A-Z0-9]{1,15}-\\d{3,8}';
+
+export const ISSUE_ID_PATTERN = new RegExp(`(${ISSUE_ID_CORE_PATTERN})`, 'i');
+export const ISSUE_ID_LIST_PREFIX_PATTERN = new RegExp(
+    `^\\s*((?:${ISSUE_ID_CORE_PATTERN})(?:\\s*(?:,|and|&)\\s*(?:${ISSUE_ID_CORE_PATTERN}))*)`,
+    'i'
+);
+export const ISSUE_ID_LINE_PATTERN = new RegExp(`^(${ISSUE_ID_CORE_PATTERN})\\s*[:\\-]?\\s*(.*)$`, 'i');
+
+export function normalizeWhitespace(value) {
+    return String(value || '').replace(/\s+/g, ' ').trim();
+}
+
+export function normalizeIssueId(value) {
+    return normalizeWhitespace(value).toUpperCase();
+}
+
+export function isBlankIssueMarker(value) {
+    return /^[\u2014\u2013\-]+$/.test(String(value || '').trim());
+}
+
+export function extractIssueIds(value) {
+    const ids = [];
+    const seen = new Set();
+    const matches = String(value || '').matchAll(new RegExp(ISSUE_ID_PATTERN.source, 'ig'));
+
+    for (const match of matches) {
+        const normalizedId = normalizeIssueId(match[1] || '');
+        if (!normalizedId || seen.has(normalizedId)) {
+            continue;
+        }
+
+        seen.add(normalizedId);
+        ids.push(normalizedId);
+    }
+
+    return ids;
+}
+
+export function parseIssueIdCell(value) {
+    const text = normalizeWhitespace(value);
+    const issueIdListMatch = text.match(ISSUE_ID_LIST_PREFIX_PATTERN);
+    const blankId = !issueIdListMatch && isBlankIssueMarker(text);
+
+    if (!issueIdListMatch && !blankId) {
+        return null;
+    }
+
+    if (blankId) {
+        return {
+            issueIds: [BLANK_ISSUE_ID],
+            metadataText: '',
+            isBlankId: true
+        };
+    }
+
+    const issueIds = extractIssueIds(String(issueIdListMatch[1] || ''));
+    const metadataText = normalizeWhitespace(text.slice(issueIdListMatch[0].length)).replace(/^[-:;,.\s]+/, '');
+
+    return {
+        issueIds,
+        metadataText,
+        isBlankId: false
+    };
+}
+
+export function parseIssueLine(value) {
+    const text = String(value || '').trim();
+    const match = text.match(ISSUE_ID_LINE_PATTERN);
+
+    if (!match) {
+        return {
+            id: '',
+            summary: text
+        };
+    }
+
+    return {
+        id: normalizeIssueId(match[1] || ''),
+        summary: (match[2] || '').trim()
+    };
+}
\ No newline at end of file
diff --git a/web/js/issues.js b/web/js/issues.js
index 3a557eb..c8e8a49 100644
--- a/web/js/issues.js
+++ b/web/js/issues.js
@@ -1,4 +1,10 @@
 import { stripMarkdownFrontmatter } from './markdown.js';
+import {
+    BLANK_ISSUE_ID,
+    normalizeIssueId,
+    normalizeWhitespace,
+    parseIssueLine as parseIssueLineValue
+} from './issue-id.js';
 import { marked, Renderer } from '../vendor/marked.esm.js';
 
 const summaryMarkdownRenderer = new Renderer();
@@ -12,7 +18,6 @@ export function clearIssues() {
 }
 
 let socialRefsByIssueId = new Map();
-const ISSUE_ID_LINE_PATTERN = /^([A-Z][A-Z0-9]{1,15}-\d{3,8})\s*[:\-]?\s*(.*)$/i;
 const socialRefsReady = loadSocialRefs();
 const issueFileDataCache = new Map();
 const issueFilePromiseCache = new Map();
@@ -436,36 +441,20 @@ function dedupeIssues(issues, versionKey) {
 }
 
 function getIssueDedupeKey(id, summary, resolved, caveat) {
-    const normalizedId = String(id || '').trim().toUpperCase();
+    const normalizedId = normalizeIssueId(id);
 
-    if (normalizedId !== 'BLANK-000000') {
+    if (normalizedId !== BLANK_ISSUE_ID) {
         return normalizedId;
     }
 
-    const normalizedSummary = normalizeWhitespace(String(summary || ''));
-    const normalizedResolved = normalizeWhitespace(String(resolved || ''));
-    const normalizedCaveat = normalizeWhitespace(String(caveat || ''));
+    const normalizedSummary = normalizeWhitespace(summary);
+    const normalizedResolved = normalizeWhitespace(resolved);
+    const normalizedCaveat = normalizeWhitespace(caveat);
     return `${normalizedId}|${normalizedSummary}|${normalizedResolved}|${normalizedCaveat}`;
 }
 
-function normalizeWhitespace(text) {
-    return String(text || '').replace(/\s+/g, ' ').trim();
-}
-
 function parseIssueLine(text) {
-    const value = String(text || '').trim();
-    const match = value.match(ISSUE_ID_LINE_PATTERN);
-    if (match) {
-        return {
-            id: match[1].toUpperCase(),
-            summary: (match[2] || '').trim()
-        };
-    }
-
-    return {
-        id: '',
-        summary: value
-    };
+    return parseIssueLineValue(text);
 }
 
 function getSourceVersionFromFileName(fileName) {
@@ -506,7 +495,7 @@ function renderSummaryCell(cell, issue) {
 }
 
 function getSocialRefsForIssue(issueId) {
-    const normalizedIssueId = String(issueId || '').trim().toUpperCase();
+    const normalizedIssueId = normalizeIssueId(issueId);
     if (!normalizedIssueId) {
         return [];
     }
diff --git a/web/js/process.js b/web/js/process.js
index 9b11920..30cbbe4 100644
--- a/web/js/process.js
+++ b/web/js/process.js
@@ -1,4 +1,8 @@
 import { buildIssueMarkdownDocument } from './markdown.js';
+import {
+    normalizeWhitespace,
+    parseIssueIdCell
+} from './issue-id.js';
 
 if (typeof document !== 'undefined') {
     document.addEventListener('DOMContentLoaded', () => {
@@ -14,8 +18,6 @@ if (typeof document !== 'undefined') {
 
 let activeDownloadUrl = null;
 const PROCESS_FORM_STATE_KEY = 'bugmedley.process.formState.v1';
-const ISSUE_ID_PATTERN = /([A-Z][A-Z0-9]{1,15}-\d{3,8})/i;
-const ISSUE_ID_LIST_PREFIX_PATTERN = /^\s*((?:[A-Z][A-Z0-9]{1,15}-\d{3,8})(?:\s*(?:,|and|&)\s*(?:[A-Z][A-Z0-9]{1,15}-\d{3,8}))*)/i;
 const BLOCK_CONTAINER_TAGS = new Set(['ARTICLE', 'ASIDE', 'BLOCKQUOTE', 'DIV', 'P', 'PRE', 'SECTION']);
 const TEXT_NODE = 3;
 const ELEMENT_NODE = 1;
@@ -135,26 +137,18 @@ export function parseIssuesFromHtmlTable(htmlText, options = {}) {
             return;
         }
 
-        const issueIdListMatch = leftCellText.match(ISSUE_ID_LIST_PREFIX_PATTERN);
-        const isBlankId = !issueIdListMatch && /^[\u2014\u2013\-]+$/.test(leftCellText.trim());
-
-        if (!issueIdListMatch && !isBlankId) {
+        const issueIdData = parseIssueIdCell(leftCellText);
+        if (!issueIdData) {
             return;
         }
 
-        const issueIds = isBlankId
-            ? ['BLANK-000000']
-            : Array.from(String(issueIdListMatch[1] || '').matchAll(new RegExp(ISSUE_ID_PATTERN.source, 'ig')))
-                .map(match => String(match[1] || '').toUpperCase())
-                .filter(Boolean);
+        const issueIds = issueIdData.issueIds;
 
         if (issueIds.length === 0) {
             return;
         }
 
-        const metadataText = isBlankId
-            ? ''
-            : normalizeWhitespace(leftCellText.slice(issueIdListMatch[0].length)).replace(/^[-:;,.\s]+/, '');
+        const metadataText = issueIdData.metadataText;
         const resolved = isResolvedMetadataText(metadataText) ? metadataText : '';
         const description = rightCellText;
 
@@ -509,10 +503,6 @@ function sanitizeTableCellText(text) {
     return normalizeWhitespace(text).replace(/\|/g, '\\|');
 }
 
-function normalizeWhitespace(value) {
-    return value.replace(/\s+/g, ' ').trim();
-}
-
 function setParseStatus(message, isError = false) {
     const status = document.getElementById('parseStatus');
     status.textContent = message;