> ## Documentation Index
> Fetch the complete documentation index at: https://docs.valiancehealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Drug coding

> Map drug names — brands, generics, local formulations — to RxNorm concepts.

Drug coding runs through [`POST /api/v1/search/`](/api-reference) with `domain: "Drug"`.

| Vocabulary | Parameter value | Status    |
| ---------- | --------------- | --------- |
| RxNorm     | `RxNorm`        | Available |

## Code a drug

```bash theme={null}
curl https://api.v2.healthproximate.com/api/v1/search/ \
  -H "X-API-Key: hpx_..." \
  -H "Content-Type: application/json" \
  -d '{
    "query": "augmentin 625mg",
    "domain": "Drug",
    "vocabulary": "RxNorm",
    "limit": 5
  }'
```

Brand names resolve toward their ingredient and clinical-drug concepts, so `augmentin` finds amoxicillin/clavulanate concepts even when the exact brand string is absent.

## Practical notes

1. **Granularity:** RxNorm carries ingredient, clinical drug, and branded levels. Pick the level your downstream system expects and filter candidates by concept class.
2. **Local products:** Malaysian trade names not in RxNorm resolve via ingredient matches. Review low-score candidates before use.
3. **Supply items are not drugs:** consumables and implants (stents, dressings) live in the Device/supply space, not RxNorm — a drug search will not find them.