Named Entity Recognition Grammars Package 26.2
Named Entity Recognition Grammars User Guide

# dea grammar

The dea grammar is found in the set PHI.

entity | description | examples | components | checksum
--- | --- | --- | --- | ---
dea/context/us | A US DEA (Drug Enforcement Agency) registration number with context. | DEA Registration Number: BE1234563 | ✔️ | ❌
dea/landmark/us | A US DEA registration number landmark. | DEA Registration Number | ❌ | ❌
dea/ndc/context/us | A US National Drug Code (NDC) with context. | NDC: 66467-2220-1 | ✔️ | ❌
dea/ndc/landmark/us | A US National Drug Code landmark. | NDC | ❌ | ❌
dea/ndc/nocontext/us | A US National Drug Code without context. | 66467-2220-1 | ✔️ | ❌
dea/ndc_billing/context/us | A US National Drug Code billing derivative with context. | NDC: 12345-6789-10 | ✔️ | ❌
dea/ndc_billing/landmark/us | A US National Drug Code billing derivative landmark. | NDC | ❌ | ❌
dea/ndc_billing/nocontext/us | A US National Drug Code billing derivative without context. | 12345-6789-10 | ✔️ | ❌
dea/nocontext/us | A US DEA registration number without context. | BE1234563 | ✔️ | ❌

The following components are produced by the above entities.

components | description | examples | context
--- | --- | --- | ---
CHECKSUM | checksum digit of an identification number | 1 | 460032197910193621
LABELER_CODE | manufacturer or distributor code | 12345 | NDC: 12345-6789-10
PACKAGE_CODE | code indicating package size and type of drug | 10 | NDC: 12345-6789-10
PRODUCT_CODE | code indicating the labeler's product | 6789 | NDC: 12345-6789-10

In the tables, ✔️ indicates that the item is always used, and ❌ that the item is never used. The ✓ symbol indicates that the item is only used for some entities (that is, for some but not all countries or languages). For details, refer to the relevant entity page.

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Version 26.2 | Last updated April 2026

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Product: Named Entity Recognition Grammars Package 26.2

Topic Title: dea grammar