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

# Datasets & Data Packages

> Generated messages use real ICD-10 codes, real LOINC identifiers, and real NDC numbers — not placeholder values that fail downstream validation.

Eight datasets ship with Pidgeon, from ICD-10 diagnosis codes to NDC drug products. Free tier includes basic subsets; Pro unlocks full datasets plus RxNorm, HCPCS, and CPT.

## Available Datasets

| Dataset        | Codes                   | Free         | Pro                   |
| -------------- | ----------------------- | ------------ | --------------------- |
| LOINC 2.81     | 108K lab/clinical codes | Basic subset | Full                  |
| SNOMED CT US   | 350K+ clinical terms    | Basic subset | Full                  |
| ICD-10-CM 2026 | 74K diagnosis codes     | Full         | Full                  |
| ICD-9-CM v32   | DX + Procedure codes    | Full         | Full                  |
| NDC            | 110K drug products      | Basic subset | Full                  |
| CVX            | 288 vaccine codes       | Full         | Full                  |
| RxNorm         | Drug terminology        | —            | Full                  |
| HCPCS          | Procedure/service codes | —            | Full                  |
| CPT            | Procedure codes         | —            | Add-on (\$30/user/yr) |

<Info>The CPT dataset requires a separate license add-on due to AMA royalty requirements.</Info>

## Managing Datasets

```bash theme={null}
# List available and installed datasets
pidgeon data list

# Install a dataset
pidgeon data install loinc
pidgeon data install snomed

# Import a custom dataset
pidgeon data import ./custom-codes.csv

# Update all installed datasets
pidgeon data update
```

## Custom Datasets

Import your own code sets via CSV with columns for code, display name, and system URI:

```csv theme={null}
code,display,system
LOCAL001,Custom Lab Test,http://hospital.org/labs
LOCAL002,Custom Procedure,http://hospital.org/procedures
```

```bash theme={null}
pidgeon data import ./custom-codes.csv
```