feat: Add LaTeX template-based form filling for G2210-11
Replace unreliable visual overlay mode with precise LaTeX templates: - Add LaTeX template for G2210-11 (Ärztlicher Befundbericht der WAG) - Create Python Flask backend for LaTeX compilation (latex_service.py, server.py) - Add frontend latexService.ts for API communication - Update ReviewPanel with LaTeX mode toggle and preview - Enhance Gemini prompts with G2210-11 specific field extraction - Add Dockerfile with TeX Live for Railway deployment - Update railway.toml to use Docker builder The LaTeX approach ensures accurate field placement and proper formatting for German medical/insurance forms. https://claude.ai/code/session_016pQhdznHZ74Fpkvwr3cLBq
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Claude
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10 changed files with 1557 additions and 32 deletions
251
services/latexService.ts
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251
services/latexService.ts
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/**
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* LaTeX Form Generation Service
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*
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* This service communicates with the Python LaTeX backend to generate
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* filled PDF forms using LaTeX templates.
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*/
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import { ExtractedField } from '../types';
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// Backend API URL - can be configured via environment variable
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const API_BASE_URL = import.meta.env.VITE_LATEX_API_URL || 'http://localhost:5000';
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export interface LatexGenerationResult {
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success: boolean;
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pdf?: string; // base64 encoded PDF
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mappedFields?: Record<string, string>;
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error?: string;
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}
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export interface TemplateInfo {
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name: string;
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fields: string[];
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}
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/**
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* Check if the LaTeX backend is available
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*/
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export const isLatexServiceAvailable = async (): Promise<boolean> => {
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try {
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const response = await fetch(`${API_BASE_URL}/api/health`, {
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method: 'GET',
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signal: AbortSignal.timeout(3000),
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});
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return response.ok;
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} catch {
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return false;
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}
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};
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/**
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* Get list of available LaTeX templates
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*/
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export const getAvailableTemplates = async (): Promise<string[]> => {
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try {
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const response = await fetch(`${API_BASE_URL}/api/templates`);
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if (!response.ok) {
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throw new Error('Failed to fetch templates');
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}
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const data = await response.json();
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return data.templates || [];
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} catch (error) {
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console.warn('Could not fetch templates:', error);
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return [];
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}
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};
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/**
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* Get field mapping for a specific template
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*/
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export const getTemplateFieldMapping = async (templateName: string): Promise<Record<string, string[]> | null> => {
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try {
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const response = await fetch(`${API_BASE_URL}/api/field-mapping/${templateName}`);
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if (!response.ok) {
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return null;
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}
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const data = await response.json();
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return data.mapping || null;
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} catch (error) {
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console.warn('Could not fetch field mapping:', error);
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return null;
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}
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};
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/**
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* Generate a filled PDF using LaTeX template
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*/
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export const generateLatexPdf = async (
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templateName: string,
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fields: ExtractedField[]
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): Promise<LatexGenerationResult> => {
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try {
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const response = await fetch(`${API_BASE_URL}/api/generate`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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template: templateName,
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fields: fields.map(f => ({
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label: f.label,
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value: f.value,
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key: f.key,
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})),
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format: 'base64',
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}),
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});
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if (!response.ok) {
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const errorData = await response.json().catch(() => ({}));
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throw new Error(errorData.error || `HTTP ${response.status}`);
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}
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const data = await response.json();
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return {
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success: true,
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pdf: data.pdf,
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mappedFields: data.mapped_fields,
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};
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} catch (error) {
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console.error('LaTeX PDF generation failed:', error);
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return {
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success: false,
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error: error instanceof Error ? error.message : 'Unknown error',
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};
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}
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};
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/**
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* Preview the filled LaTeX source (for debugging)
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*/
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export const previewLatexSource = async (
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templateName: string,
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fields: ExtractedField[]
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): Promise<{ latex?: string; error?: string }> => {
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try {
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const response = await fetch(`${API_BASE_URL}/api/preview`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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template: templateName,
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fields: fields.map(f => ({
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label: f.label,
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value: f.value,
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key: f.key,
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})),
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}),
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});
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if (!response.ok) {
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const errorData = await response.json().catch(() => ({}));
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throw new Error(errorData.error || `HTTP ${response.status}`);
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}
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const data = await response.json();
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return { latex: data.latex };
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} catch (error) {
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return { error: error instanceof Error ? error.message : 'Unknown error' };
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}
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};
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/**
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* Convert base64 PDF to Blob URL for preview/download
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*/
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export const base64ToBlob = (base64: string, mimeType: string = 'application/pdf'): Blob => {
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const byteCharacters = atob(base64);
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const byteNumbers = new Array(byteCharacters.length);
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for (let i = 0; i < byteCharacters.length; i++) {
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byteNumbers[i] = byteCharacters.charCodeAt(i);
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}
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const byteArray = new Uint8Array(byteNumbers);
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return new Blob([byteArray], { type: mimeType });
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};
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/**
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* Detect which template to use based on form file name or content
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*/
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export const detectTemplate = (fileName: string): string | null => {
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const lowerName = fileName.toLowerCase();
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// G2210-11 Ärztlicher Befundbericht
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if (lowerName.includes('g2210') ||
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lowerName.includes('befundbericht') ||
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lowerName.includes('aerztlicher') ||
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lowerName.includes('ärztlicher')) {
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return 'G2210-11';
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}
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// Add more template detection patterns here
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// if (lowerName.includes('s0051')) return 'S0051';
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return null;
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};
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/**
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* Get expected fields for a known form type
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* This helps the AI extraction know what fields to look for
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*/
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export const getExpectedFields = (templateName: string): string[] => {
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const fieldMappings: Record<string, string[]> = {
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'G2210-11': [
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'Versicherungsnummer',
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'ABT.-Nr.',
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'Name, Vorname',
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'Geburtsdatum',
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'Geschlecht',
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'Straße, Hausnummer',
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'PLZ',
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'Ort',
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'Telefon',
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'Krankenkasse',
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'Derzeitige Tätigkeit',
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'Arbeitgeber',
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'Arbeitsunfähig seit',
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'Diagnose 1',
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'Diagnose 1 ICD',
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'Diagnose 2',
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'Diagnose 2 ICD',
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'Diagnose 3',
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'Diagnose 3 ICD',
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'Diagnose 4',
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'Diagnose 4 ICD',
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'Diagnose 5',
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'Diagnose 5 ICD',
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'Diagnose 6',
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'Diagnose 6 ICD',
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'Anamnese/Beschwerden',
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'Krankheitsverlauf',
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'Körperlicher Befund',
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'Mobilität (keine/gering/erheblich)',
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'Selbstversorgung (keine/gering/erheblich)',
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'Haushaltsführung (keine/gering/erheblich)',
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'Erwerbstätigkeit (keine/gering/erheblich)',
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'Medikament 1',
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'Medikament 1 Dosis',
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'Medikament 2',
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'Medikament 2 Dosis',
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'Medikament 3',
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'Medikament 3 Dosis',
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'Physikalische Therapie',
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'Frühere Reha Zeitraum',
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'Frühere Reha Einrichtung',
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'Leistungsvermögen',
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'Rehabilitationsbedürftigkeit',
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'Rehabilitationsziel',
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'Rehabilitationsform (stationär/ambulant)',
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'Reisefähig (ja/nein)',
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'Begleitperson erforderlich (ja/nein)',
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'Ergänzende Angaben',
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'Arzt Name',
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'Facharztbezeichnung',
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'Praxis Anschrift',
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'Praxis Telefon',
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'BSNR',
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'LANR',
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],
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};
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return fieldMappings[templateName] || [];
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};
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