Immunization coding basics
Shared terminology and core principles for representing vaccination histories accurately.
Open the guide →Technical knowledge for immunization coding
Clear answers for complex vaccine code questions.
IVC connects code-system authors and custodians with practical guidance, shared vocabulary knowledge, and a community of peers.
Technical library
Find information by topic
Focused resources for people who create, maintain, map, or implement immunization vocabularies.
Code-system directory
Profiles of national and universal vocabularies, including purpose, stewardship, and coverage.
Explore code systems →Crosswalks and mapping
Methods and reference material for relating concepts across immunization code systems.
Review mapping guidance →Unified Nomenclature of Vaccines
How NUVA represents vaccine knowledge and connects concepts used around the world.
Learn about NUVA →Metrics and assessment
Ways to evaluate whether a vocabulary supports complete, useful vaccination histories.
View assessment approach →FAQ and acronyms
Plain-language answers and definitions for frequently used immunization terminology.
Browse quick reference →Knowledge base
Recently updated
Visible review dates help technical readers judge whether guidance is current.
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- NUVA resource links and implementation notesNUVA · Reference
About the collaboration
A practical peer network for vocabulary experts
IVC is a small collaboration working to make immunization information easier to understand across code systems and borders. We support—not replace—the organizations that steward existing vocabularies.