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Industry code 4223 Construction of telecommunications, information and communication works, updated according to Decision 36/2025/QĐ-TTg. To learn more about the details of industry code 4223, please refer to this article by VN Law Firm!

1. What is a business industry code?

Business industry codes are a series of numbers encoded to represent a specific business industry. Organizations and individuals, when preparing business registration documents, must use this business industry code table for registration. Level 4 industry codes (with 4 digits) are the codes used for business registration.

The Vietnam Standard Industrial Classification (VSIC) system, promulgated under Decision 36/2025/QD-TTg, has a hierarchical structure with 5 levels, from general to specific:

Level	Name	Code	Number
Level 1	Economic industry Level 1	1 letter (from A to V)	22 industries
Level 2	Economic industry Level 2	2 digits (according to Level 1)	87 industries
Level 3	Economic industry Level 3	3 digits (according to Level 2)	259 industries
Level 4	Economic industry Level 4	4 digits (according to Level 3)	495 industries
Level 5	Economic industry Level 5	5 digits (according to Level 4)	743 industries

Example of industry code structure: Taking the food manufacturing industry as an example:

Level 1: C (Manufacturing)
Level 2: 10 (Manufacture of food products)
Level 3: 107 (Manufacture of other food products)
Level 4: 1075 (Manufacture of prepared meals and dishes)
Level 5: 10751 (Manufacture of prepared meals and dishes from meat)

2. Regulations on Industry Code 4223 Construction of telecommunications, information and communication works

Industry Code	Industry Name
4223	Construction of telecommunications, information and communication works

Industry Code 4223 Construction of telecommunications, information and communication works

This group includes:

– Construction of telecommunication and communication cable networks and related works and structures:

+ Cable lines, telecommunication networks,

+ Pole lines, conduit lines, manholes for communication cables and auxiliary works.

– Construction of radio and television broadcasting stations and related works.

Excludes: Project management activities related to civil engineering construction works are classified under group 7110 (Architectural and related technical consultancy activities).

Industry code 4223 Construction of telecommunications and communication works

3. Suggested way to record Industry Code 4223 Construction of telecommunications, information and communication works

– When registering a business establishment, when notifying changes to business lines or when requesting a change to a Business Registration Certificate, the business founder or enterprise selects a level four economic industry in the Vietnam Standard Industrial Classification System to record the business lines in the business registration application. The business registration agency provides guidance, cross-references, and records the enterprise’s business lines in the National Business Registration Database.

– For conditional business lines stipulated in other legal documents, the business lines shall be recorded according to the provisions of those legal documents.

Suggested way to record Industry Code 4223 Construction of telecommunications, information and communication works:

Case 1: General

Industry Code	Industry Name
4223	Construction of telecommunications, information and communication works

Case 2: Detailed

Industry Code	Industry Name
4223	Construction of telecommunications, information and communication works Details: Construction of environmental treatment facilities, energy transmission networks, telecommunications, transformer stations and other public utility works

Case 3: Detailed

Industry Code	Industry Name
4223	Construction of telecommunications, information and communication works Details: Construction of telecommunications works

Note: Depending on the specific industry and business line, as well as specific regulations in each locality, it may be necessary to provide detailed information for the level 4 industry code or commit to operating according to regulations.

4. Business line change service for companies and enterprises at VN Law Firm

Business line change service for companies and enterprises at VN Law Firm helps customers save a lot of time and effort. Coming to VN Law Firm, you will be provided with business line change services for companies and enterprises, including:

Consulting on the process and procedures for changing, adding business lines;
Consulting customers on preparing necessary documents;
Drafting and submitting application documents for changing or adding business lines on behalf of customers at the Business Registration Office;
Tracking the application, supplementing or amending documents (if any) as required by the specialist;
Performing procedures to announce business registration information on the Information Portal;
Handing over the confirmation of business line change;
Guiding customers on important procedures to note after changing business lines…