SIC Code 6371 — Pension, Health, and Welfare Funds

4-digit industry in the 1987 Standard Industrial Classification — still requested by banks, insurers, SEC filings and legacy systems.

Code	6371
Title	Pension, Health, and Welfare Funds
System	SIC 1987 (final edition — replaced by NAICS in 1997)

The SIC was last revised in 1987 and officially superseded by NAICS in 1997, but it never fully disappeared: the SEC still tags EDGAR filings with SIC codes, and many banks, insurers and legacy databases keep requesting it. That is why converting between the two systems is still routine work.

NAICS equivalents of SIC 6371

From the official U.S. Census concordance (1987 SIC → 2002 NAICS). Where the 2002 code no longer exists in NAICS 2022, the closest current code is shown.

NAICS 2002	Title (2002)	Current 2022 code
523920	Portfolio Management	superseded — closest: 5239 Other Financial Investment Activities
524292	Third Party Administration of Insurance and Pension Funds	524292 (same code)
525110	Pension Funds	525110 (same code)
525120	Health and Welfare Funds	525120 (same code)
525990	Other Financial Vehicles	525990 (same code)

Other SIC codes in 63xx

• 6311 — Life Insurance
• 6321 — Accident and Health Insurance
• 6324 — Hospital and Medical Service Plans
• 6331 — Fire, Marine, and Casualty Insurance
• 6351 — Surety Insurance
• 6361 — Title Insurance
• 6399 — Insurance Carriers, Not Elsewhere Classified

Data: 1987 SIC titles (OSHA/Census) and official Census concordance — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.