There are 11 NDA Classification Codes.
Type 1 — New Molecular Entity.
Type 2 - New Active Ingredient.
Type 3 — New Dosage Form.
Type 4 — New Combination.
Type 5 — New Formulation or Other Differences (e.g., new indication, new applicant, new manufacturer).
Type 6 — New Indication or Claim, Same Applicant.
Type 7 — Previously Marketed But Without an Approved NDA.
Type 8 — Rx to OTC.
Type 9 — New Indication or Claim, Drug Not to be Marketed Under Type 9 NDA After Approval.
Type 10 — New Indication or Claim, Drug to be Marketed Under Type 10 NDA After Approval.
Medical Gas — A Designated Medical Gas Certification Request Submitted Under Section 576 of the FD&C Act.