What is NDC 49575-004?

49575-004 is the product NDC for Air, Air 1000 mL/L gas, listed with the FDA by Machine & Welding Supply Company dba Arc3 Gases South. It has 10 package NDCs, shown above in 10- and 11-digit form.

Machine & Welding Supply Company dba Arc3 Gases South, NDC labeler code 49575. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.

What other NDCs exist for Air?

35 other product NDCs are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

Air NDC 49575-004 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)49575-004Labeler and product segments. Claims need a package NDC.

Product NDC at billing width49575-0004Add the package segment from the table below.

Package NDCs as listed with the FDA, and the 11-digit 5-4-2 form used on claims. The highlighted digit is the added leading zero.
Package NDC	11-digit (billing)	Package
49575-004-01	49575000401	408 L in 1 CYLINDER (49575-004-01)Marketed from Jun 15, 1999
49575-004-02	49575000402	665 L in 1 CYLINDER (49575-004-02)Marketed from Jun 15, 1999
49575-004-03	49575000403	3030 L in 1 CYLINDER (49575-004-03)Marketed from Jun 15, 1999
49575-004-04	49575000404	5376 L in 1 CYLINDER (49575-004-04)Marketed from Jun 15, 1999
49575-004-05	49575000405	8070 L in 1 CYLINDER (49575-004-05)Marketed from Jun 15, 1999
49575-004-06	49575000406	2305 L in 1 CYLINDER (49575-004-06)Marketed from Jun 15, 1999
49575-004-07	49575000407	6032 L in 1 CYLINDER (49575-004-07)Marketed from Jun 15, 1999
49575-004-08	49575000408	1133 L in 1 CYLINDER (49575-004-08)Marketed from Jun 15, 1999
49575-004-09	49575000409	4268.4 L in 1 CYLINDER (49575-004-09)Marketed from Jun 15, 1999
49575-004-10	49575000410	1557.4 L in 1 CYLINDER (49575-004-10)Marketed from Mar 27, 2025

How the 11-digit form is made: The product segment has 3 digits, so one leading zero is added to it (5-3-2 → 5-4-2). Formatting the NDC does not by itself make it billable — the product, package and quantity must match what was dispensed or administered, and payer rules apply. Conversion rules

Product information

Brand name (proprietary): Air
Generic name (nonproprietary): air
Active ingredients: Air — 1000 mL/L
Dosage form: Gas
Route: Respiratory (Inhalation)
Labeler: Machine & Welding Supply Company dba Arc3 Gases SouthNDC labeler code 49575
Product type: Prescription drug
Marketing category: NDA — New Drug ApplicationApplication NDA 205796
Marketing start: Jun 15, 1999
Listing expires: Dec 31, 2026
Identifiers: Product ID 49575-004_44ff1510-a74b-3be0-e063-6294a90a3146SPL ID 44ff1510-a74b-3be0-e063-6294a90a3146SPL set ID feb76dd5-9430-4df2-81c6-e4be48713c1bUNII K21NZZ5Y0B

Billing references

What Med-Code can say about coding this product, and where each statement comes from. Nothing here is inferred from the name alone.

HCPCS codeNo match

No drug-specific HCPCS code in Med-Code's directory for this product. The directory is curated and not complete — check the current CMS HCPCS file before billing.

NDC on a medical claim

N449575000401 followed by a unit qualifier and the quantity

Package 49575-0004-01. Unit qualifiers: F2 (international unit), GR (gram), ME (milligram), ML (milliliter), UN (unit (each)). The qualifier and quantity depend on what was given. About the N4 qualifier

Product label

Current FDA label (SPL), effective Dec 2, 2025.

Full label on DailyMed (opens in a new tab)

About NDC 49575-004

What is NDC 49575-004?: 49575-004 is the product NDC for Air, Air 1000 mL/L gas, listed with the FDA by Machine & Welding Supply Company dba Arc3 Gases South. It has 10 package NDCs, shown above in 10- and 11-digit form.
What drug is associated with this NDC?: Air.
What is the active ingredient?: Air.
Who is the labeler?: Machine & Welding Supply Company dba Arc3 Gases South, NDC labeler code 49575. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Air?: 35 other product NDCs are listed under this name. See all Air NDCs.
Is there a related HCPCS / J-code?: Not in Med-Code's curated HCPCS directory. See Billing references above.

Other finished products listed under the same name: strengths, forms and labelers.

Other Air NDCs
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Air	Air 1000 mL/L	GasRespiratory (Inhalation)	Analgesic Services Inc	52085-004	52085-0004-01
Air	Air 1000 mL/L	GasRespiratory (Inhalation)	GIBBS WELDING SUPPLY, INC.	58632-003	58632-0003-01
Air	Oxygen 210 mL/L	GasRespiratory (Inhalation)	MITCHELL WELDING SUPPLY DBA Meritus Texas	72276-005	72276-0005-01
Air	Oxygen 235 mL/L	GasRespiratory (Inhalation)	- INDUSTRIAL WELDING SUPPLY CO. OF HARVEY, INC.	42241-003	42241-0003-0142241-0003-0242241-0003-03+3 more
Air	Oxygen 210 mL/L	GasRespiratory (Inhalation)	SYOXSA, Inc.	23647-003	23647-0003-0323647-0003-0423647-0003-05+1 more
Air	Oxygen 210 mL/L	GasRespiratory (Inhalation)	DJB Gas Services, Inc	43621-004	43621-0004-0143621-0004-02
Air	Oxygen 210 mL/L	GasRespiratory (Inhalation)	EUGENE WELDERS SUPPLY CO	64169-003	64169-0003-0164169-0003-0264169-0003-03+11 more
Air	Oxygen 210 mL/L	GasRespiratory (Inhalation)	Central Welding Supply Company	70151-003	70151-0003-0270151-0003-0370151-0003-04+1 more
Air	Oxygen 210 mL/L	GasRespiratory (Inhalation)	A-OX Welding Supply, LLC	10297-103	10297-0103-0110297-0103-0210297-0103-03+1 more
Air	Air 1000 mL/L	GasRespiratory (Inhalation)	DuPuy Oxygen & Supply Company, Inc.	50554-007	50554-0007-0150554-0007-0250554-0007-03+2 more

All 36 Air NDCs