A progressive Node.js framework for building efficient and scalable server-side applications.

Description

Claim Guard Backend - A NestJS application for managing ICD-9 and ICD-10 medical codes with Excel import functionality.

Features

• ICD Code Management: Import and manage ICD-9 and ICD-10 medical codes
• Excel Import: Read data from Excel files and store in PostgreSQL database
• Search & Filter: Search codes by category, code, or display text
• REST API: Full REST API endpoints for accessing ICD data
• Pagination: Built-in pagination support for large datasets

ICD Service Endpoints

Import Data

POST /icd/import

Imports ICD-9 and ICD-10 data from Excel files in the test/ directory.

Search Codes

GET /icd/search?category=ICD10&search=diabetes&page=1&limit=10

Search ICD codes with optional filters:

• category: Filter by ICD9 or ICD10
• search: Search in code or display text
• page: Page number (default: 1)
• limit: Items per page (default: 10)

Get Statistics

GET /icd/statistics

Returns count statistics for ICD codes.

Database Schema

The application uses PostgreSQL with Prisma ORM. The ICD codes are stored in the icd_codes table with the following structure:

CREATE TABLE "icd_codes" (
  "id" TEXT PRIMARY KEY DEFAULT gen_random_uuid(),
  "code" TEXT UNIQUE NOT NULL,
  "display" TEXT NOT NULL,
  "version" TEXT NOT NULL,
  "category" TEXT NOT NULL, -- "ICD9" or "ICD10"
  "createdAt" TIMESTAMP DEFAULT NOW(),
  "updatedAt" TIMESTAMP DEFAULT NOW()
);

ID Format: The id field now uses UUID (Universal Unique Identifier) format like 550e8400-e29b-41d4-a716-446655440000 instead of CUID.

Setup Instructions

1. Install Dependencies

npm install

2. Database Setup Create a .env file with your PostgreSQL connection:

DATABASE_URL="postgresql://username:password@localhost:5432/claim_guard_db?schema=public"

3. Generate Prisma Client

npx prisma generate

4. Run Database Migrations

npx prisma db push

5. Place Excel Files Ensure the following files are in the test/ directory:

• [PUBLIC] ICD-9CM e-klaim.xlsx
• [PUBLIC] ICD-10 e-klaim.xlsx

The Excel files should have at least 3 columns:

• Column 1: Code
• Column 2: Display/Description
• Column 3: Version

Project setup

$ npm install

Compile and run the project

# development
$ npm run start

# watch mode
$ npm run start:dev

# production mode
$ npm run start:prod

Run tests

# unit tests
$ npm run test

# e2e tests
$ npm run test:e2e

# test coverage
$ npm run test:cov

Deployment

When you're ready to deploy your NestJS application to production, there are some key steps you can take to ensure it runs as efficiently as possible. Check out the deployment documentation for more information.

If you are looking for a cloud-based platform to deploy your NestJS application, check out Mau, our official platform for deploying NestJS applications on AWS. Mau makes deployment straightforward and fast, requiring just a few simple steps:

$ npm install -g @nestjs/mau
$ mau deploy

With Mau, you can deploy your application in just a few clicks, allowing you to focus on building features rather than managing infrastructure.

Resources

Check out a few resources that may come in handy when working with NestJS:

• Visit the NestJS Documentation to learn more about the framework.
• For questions and support, please visit our Discord channel.
• To dive deeper and get more hands-on experience, check out our official video courses.
• Deploy your application to AWS with the help of NestJS Mau in just a few clicks.
• Visualize your application graph and interact with the NestJS application in real-time using NestJS Devtools.
• Need help with your project (part-time to full-time)? Check out our official enterprise support.
• To stay in the loop and get updates, follow us on X and LinkedIn.
• Looking for a job, or have a job to offer? Check out our official Jobs board.

Support

Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please read more here.

Stay in touch

• Author - Kamil Myśliwiec
• Website - https://nestjs.com
• Twitter - @nestframework

License

Nest is MIT licensed.