NDC codes

FDA NDC Directory
Product NDC (as listed)58657-234Labeler and product segments. Claims need a package NDC.
Product NDC at billing width58657-0234Add 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 NDC11-digit (billing)PackageCopy
58657-234-015865702340158657023401100 CAPSULE in 1 BOTTLE, PLASTIC (58657-234-01)Marketed from Apr 15, 2026

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)
Relgaabi
Generic name (nonproprietary)
gabapentin
Active ingredients
Gabapentin — 400 mg/1
Dosage form
Capsule
Route
Oral
Labeler
Method Pharmaceuticals, LLCNDC labeler code 58657
Product type
Prescription drug
Marketing category
ANDA — Abbreviated New Drug Application (generic)Application ANDA 204989
Marketing start
Listing expires
Other FDA classes
Decreased Central Nervous System Disorganized Electrical Activity (Physiologic effect)
Identifiers
Product ID 58657-234_4ef62c9f-cf61-6ad7-e063-6394a90a2774SPL ID 4ef62c9f-cf61-6ad7-e063-6394a90a2774SPL set ID 4cc6615b-5447-9c0e-e063-6394a90a2883RxCUI 310431, 310432, 2739001, 2739007, 2740839, 2740841UNII 6CW7F3G59XUPC 0358657231019, 0358657233013, 0358657234010

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 HCPCS code in Med-Code's directory. Oral products like this are usually dispensed by a pharmacy and billed by NDC.

NDC on a medical claim

N458657023401 followed by a unit qualifier and the quantity

Package 58657-0234-01. 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 .

Indications (excerpt from the label)

RELGAABI is indicated for: Management of postherpetic neuralgia in adults Adjunctive therapy in the treatment of partial onset seizures, with and without secondary generalization, in adults and pediatric patients 3 years and older with epilepsy RELGAABI is indicated for: Postherpetic neuralgia in adults ( 1 ) Adjunctive therapy in the treatment of partial onset seizures, with and without secondary generalization, in adults and pediatric patients 3 years and older with epilepsy ( 1 )

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 58657-234

What is NDC 58657-234?
58657-234 is the product NDC for Relgaabi (gabapentin), Gabapentin 400 mg/1 capsule, listed with the FDA by Method Pharmaceuticals, LLC. It has 1 package NDC, shown above in 10- and 11-digit form.
What drug is associated with this NDC?
Relgaabi (Gabapentin).
What is the active ingredient?
Gabapentin.
Who is the labeler?
Method Pharmaceuticals, LLC, NDC labeler code 58657. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Relgaabi?
2 other product NDCs are listed under this name. See all Relgaabi 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 Relgaabi NDCs
ProductStrengthForm · routeLabelerProduct NDCPackage NDCs (11-digit)
RelgaabigabapentinGabapentin 300 mg/1CapsuleOralMethod Pharmaceuticals, LLC58657-23358657-0233-01
RelgaabigabapentinGabapentin 200 mg/1CapsuleOralMethod Pharmaceuticals, LLC58657-23158657-0231-01

Other NDCs under ANDA 204989

Products listed under the same FDA application: other strengths and forms, and repackagers who relabel the same product.

FDA NDC Directory listings under ANDA 204989
ProductStrengthForm · routeLabelerProduct NDC
GabapentinGabapentin 300 mg/1CapsuleOralAdvanced Rx of Tennessee, LLC80425-0182
GabapentinGabapentin 300 mg/1CapsuleOralBryant Ranch Prepack63629-8486
GabapentinGabapentin 300 mg/1CapsuleOralBryant Ranch Prepack63629-8487
GabapentinGabapentin 400 mg/1CapsuleOralBryant Ranch Prepack63629-8488
GabapentinGabapentin 400 mg/1CapsuleOralHAWAII REPACK, INC.85534-0054
GabapentinGabapentin 300 mg/1CapsuleOralA-S Medication Solutions50090-7674
GabapentinGabapentin 100 mg/1CapsuleOralA-S Medication Solutions50090-7672
GabapentinGabapentin 100 mg/1CapsuleOralA-S Medication Solutions50090-7673
RelgaabigabapentinGabapentin 300 mg/1CapsuleOralMethod Pharmaceuticals, LLC58657-233
GabapentinGabapentin 300 mg/1CapsuleOralProficient Rx LP71205-532
GabapentinGabapentin 300 mg/1CapsuleOralA-S Medication Solutions50090-7675
RelgaabigabapentinGabapentin 200 mg/1CapsuleOralMethod Pharmaceuticals, LLC58657-231
GabapentinGabapentin 100 mg/1CapsuleOralPreferred Pharmaceuticals Inc.68788-8489
GabapentinGabapentin 300 mg/1CapsuleOralREMEDYREPACK INC.70518-2970
GabapentinGabapentin 400 mg/1CapsuleOralProficient Rx LP71205-808
GabapentinGabapentin 100 mg/1CapsuleOralBryant Ranch Prepack63629-8485
GabapentinGabapentin 100 mg/1CapsuleOralBryant Ranch Prepack63629-8484
GabapentinGabapentin 100 mg/1CapsuleOralAphena Pharma Solutions - Tennessee, LLC71610-421
GabapentinGabapentin 100 mg/1CapsuleOralAsclemed USA, Inc.76420-259
GabapentinGabapentin 400 mg/1CapsuleOralPreferred Pharmaceuticals Inc.68788-8816

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