NAICS 339112

Overview

The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments to support statistical collection, analysis, and publication about the U.S. economy. Developed under the Office of Management and Budget and implemented in 1997 to replace SIC, NAICS was jointly created with Statistics Canada and Mexico’s INEGI to enable cross-country comparability; the current U.S. vintage is 2022. ¹

NAICS 339112 covers establishments primarily engaged in manufacturing medical, surgical, ophthalmic, and veterinary instruments and apparatus, excluding electromedical, electrotherapeutic, and irradiation apparatus. Examples include syringes, hypodermic needles, anesthesia apparatus, blood transfusion equipment, catheters, surgical clamps, and medical thermometers. This definition is used by federal statistical programs and the Economic Census to consistently classify non-electromedical medical instrument manufacturing activity across the United States. ²

See also on G2X:

• NAICS 339112 overview
• NAICS 339111
• NAICS 339115

What this NAICS covers

• Manufacture of non-electromedical medical and surgical instruments and apparatus. ²
• Production of ophthalmic instruments that are not classified as electromedical devices. ²
• Veterinary surgical and diagnostic instruments and apparatus (non-electromedical). ²
• Syringes and hypodermic needles manufacturing. ²
• Catheters, surgical clamps, and related handheld surgical tools. ²
• Anesthesia apparatus and blood transfusion equipment production. ²
• Medical thermometers manufactured for clinical use. ²

Related NAICS and PSC codes

Verified by official NAICS 2022 cross-references. ²
PSC descriptors per the federal Product and Service Code (PSC) Manual, April 2025. ³

Type	Code	Descriptor
NAICS	339113	Surgical Appliance and Supplies Manufacturing
NAICS	339114	Dental Equipment and Supplies Manufacturing
NAICS	334510	Electromedical and Electrotherapeutic Apparatus Manufacturing
PSC	6515	Medical and Surgical Instruments, Equipment, and Supplies

Scope notes and exclusions

• Electromedical and electrotherapeutic apparatus are excluded from NAICS 339112; these devices fall under a separate industry. ²
• Irradiation equipment (e.g., radiotherapy units) is outside this code’s scope. ²
• Surgical appliances and specialized hospital furniture (e.g., beds, operating tables) are not classified here. ²
• Dental equipment, supplies, and dental laboratory furniture are excluded. ²
• Nonmedical thermometers and other general measuring devices are excluded. ²

Frequently asked questions

• What products fall under NAICS 339112?
  NAICS 339112 encompasses manufacturing of medical, surgical, ophthalmic, and veterinary instruments and apparatus that are not electromedical. Typical products include syringes, hypodermic needles, catheters, surgical clamps, anesthesia apparatus, blood transfusion equipment, and medical thermometers used in clinical settings. ²

• Are electromedical devices included in this industry?
  No. Devices whose primary function is electromedical or electrotherapeutic, as well as irradiation apparatus, are excluded from NAICS 339112 and classified in other industries, such as NAICS 334510. ²

• Do ophthalmic and veterinary instruments belong in NAICS 339112?
  Yes. Non-electromedical ophthalmic instruments and veterinary instruments are explicitly included in NAICS 339112’s scope when produced by manufacturers. Examples include manual diagnostic devices, surgical tools, and nonpowered apparatus. ²

• Does this code cover diagnostic laboratories or imaging centers?
  No. Diagnostic services such as clinical laboratory testing and imaging centers are service-providing activities in the Health Care and Social Assistance sector, not manufacturing, and therefore fall outside NAICS 339112. ²

• Did the 2022 NAICS update change the core definition of NAICS 339112?
  The 2022 NAICS Manual defines this industry as manufacturing medical, surgical, ophthalmic, and veterinary instruments and apparatus, excluding electromedical/irradiation equipment, with the listed examples. Specific change notes for this code: Not specified by official sources. ²

Useful resources

• U.S. Census Bureau NAICS main page and 2022 NAICS Search. ¹
• 2022 NAICS Manual (official industry definitions and cross-references). ²
• Product and Service Code (PSC) Manual, April 2025 (official PSC descriptors). ³

References

1. U.S. Census Bureau — North American Industry Classification System (NAICS) main page and 2022 Search: https://www.census.gov/naics/?input=ec&year=2022
2. U.S. Census Bureau — 2022 NAICS Manual (official industry titles, definitions, and cross-references): https://www.census.gov/naics/reference_files_tools/2022_NAICS_Manual.pdf
3. U.S. General Services Administration — Product and Service Code (PSC) Manual, April 2025: https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf