Data Commands - Pidgeon Health

pidgeon data is a free CLI command. It manages two kinds of local package: terminology datasets (the code systems that make generated messages pass downstream validation) and FHIR Implementation Guide packages (the profiles that pidgeon conform and FHIR validation grade against). Run pidgeon data list for the live catalog on your machine.

Terminology datasets

Dataset	Codes	Size	Free	Pro
LOINC 2.81	108K	25 MB	Basic subset	Full
SNOMED CT US	350K+	1.5 GB	Basic subset	Full
ICD-10-CM 2026	74K	15 MB	Full	Full
ICD-9-CM v32	DX + SG	8 MB	Full	Full
NDC	110K products	30 MB	Basic subset	Full
CVX	288 entries	1 MB	Full	Full
RxNorm	Large	1.7 GB	—	Full
HCPCS	Full set	5 MB	—	Full
CPT	Procedure codes	—	—	Licensed add-on

Eight terminology datasets ship; CPT is a separate licensed add-on gated by AMA royalty terms. This table is the CLI companion to Datasets & Data Packages.

FHIR Implementation Guide packages

pidgeon data is also the IG package manager. Install a guide, and FHIR validation and pidgeon conform grade against its profiles.

Package	IG	Version
`fhir-r4-core`	FHIR R4 base	4.0.1
`fhir-us-core-3.1.1`	US Core	3.1.1
`fhir-us-core-6.0`	US Core	6.1.0
`fhir-davinci-pas-2.1`	Da Vinci Prior Auth Support	2.1.0
`fhir-davinci-crd-2.1`	Da Vinci Coverage Requirements Discovery	2.1.0
`fhir-davinci-dtr-2.0`	Da Vinci Documentation Templates and Rules	2.0.0

pidgeon data install fhir-us-core-3.1.1
pidgeon data install fhir-davinci-pas-2.1

License-gated standards packages

Some standards material is member-only and closed by default. It installs only with an explicit --accept-license:

# NCPDP SCRIPT (member-only XSDs; NCPDP membership required)
pidgeon data install ncpdp-script --accept-license

# X12 5010 guides
pidgeon data install x12-5010 --accept-license

Until the ncpdp-script package is installed, NCPDP generation and validation report a license-required state rather than running. See Message Generation.

pidgeon data list

List every available and installed package: terminology datasets, FHIR IGs, and license-gated standards.

pidgeon data list

Name                   DataType          Status      Version
────────────────────────────────────────────────────────────
loinc                  lab-tests         installed   2.81
snomed                 snomed-concepts   available   Sep 2025
icd10                  diagnoses         installed   2026
ndc                    medications       installed   Current
fhir-r4-core           fhir-ig           installed   4.0.1
fhir-us-core-3.1.1     fhir-ig           available   3.1.1
fhir-davinci-pas-2.1   fhir-ig           installed   2.1.0
ncpdp-script           ncpdp-schemas     available   (license)

pidgeon data install

Download and install a package (terminology dataset, FHIR IG, or a license-gated standards package).

pidgeon data install <package> [--accept-license] [--all]

Flag	Description
`--accept-license`	Accept required license terms (for example UMLS, NCPDP membership). Required for member-only packages.
`--all`	Install every available package.

pidgeon data install loinc
pidgeon data install rxnorm
pidgeon data install fhir-us-core-3.1.1
pidgeon data install ncpdp-script --accept-license

pidgeon data import

Import a custom dataset from a CSV or JSON file.

pidgeon data import <path>

pidgeon data import ./custom-codes.csv

pidgeon data update

Update all installed datasets to the latest versions.

pidgeon data update

​Terminology datasets

​FHIR Implementation Guide packages

​License-gated standards packages

​pidgeon data list

​pidgeon data install

​pidgeon data import

​pidgeon data update