# Versioning - MII Implementation Guide Core Dataset Base v2026.0.0

## Versioning

### Versioning Scheme

Starting with version 2024.0.0, the MII Kerndatensatz follows a **Calendar Versioning (CalVer)** scheme:

* **YYYY.MINOR.PATCH** format
* **YYYY** = Year the IG is applicable and intended to be used
* **MINOR** = Minor version number (incremented for feature additions)
* **PATCH** = Patch version number (incremented for bug fixes)

### Version History and Changes

* **[Change Log](changes.md)** - Detailed change log documenting all modifications across versions, organized by module (Person, Treatment Case, Diagnosis, Procedure)

