Electronic Common Technical Document (eCTD)
The electronic specification for submitting a CTD dossier: the message standard, controlled vocabularies and validation criteria that make a submission machine-processable by a regulator. Version 4.0 is built on HL7 Version 3 Regulated Product Submission Release 2.
Always verify against the current published text before relying on it for a submission or inspection.
Scope & applicability
The transport and structure of an electronic submission — how documents are packaged, identified, versioned and replaced across a product lifecycle. It does not govern content, which is M4. Regional Module 1 specifications sit alongside it and differ by authority.
Key requirements
- eCTD v4.0 Implementation Package — implementation guide and controlled vocabularies, versioned separately since May 2024
- HL7 V3 Regulated Product Submission Release 2 as the underlying message standard
- Lifecycle operations that let a document be replaced, appended or deleted across sequences without ambiguity
- Regional Module 1 specifications and validation criteria published by each authority
Implementation tips
- Rehearse technical validation before the real dispatch — publishing is treated as an administrative step at the end and then becomes the actual bottleneck
- Adoption is staged and regional: FDA began accepting eCTD v4.0 voluntarily in September 2024 with mandatory use projected later, so plan for both formats rather than one
Where this control fails
live FDA enforcementLive FDA recalls SPEQ maps to this standard’s topics — a SPEQ interpretation, not an FDA classification.
ICH M8 (eCTD v4.0): frequently asked questions
Quick answers to common questions about ICH M8 (eCTD v4.0).
What is ICH M8 (eCTD v4.0)?
ICH M8 (eCTD v4.0) — Electronic Common Technical Document (eCTD) — is a guideline issued by the International Council for Harmonisation. The electronic specification for submitting a CTD dossier: the message standard, controlled vocabularies and validation criteria that make a submission machine-processable by a regulator. Version 4.0 is built on HL7 Version 3 Regulated Product Submission Release 2.
Who does ICH M8 (eCTD v4.0) apply to?
The transport and structure of an electronic submission — how documents are packaged, identified, versioned and replaced across a product lifecycle. It does not govern content, which is M4. Regional Module 1 specifications sit alongside it and differ by authority.
What are the key requirements of ICH M8 (eCTD v4.0)?
ICH M8 (eCTD v4.0) requires, among other things: eCTD v4.0 Implementation Package — implementation guide and controlled vocabularies, versioned separately since May 2024; HL7 V3 Regulated Product Submission Release 2 as the underlying message standard; Lifecycle operations that let a document be replaced, appended or deleted across sequences without ambiguity; Regional Module 1 specifications and validation criteria published by each authority.
When was ICH M8 (eCTD v4.0) last updated?
The current version of ICH M8 (eCTD v4.0) dates from May 2024.
This standard in practice
Recall domain is a SPEQ mapping of this standard’s topics, not an FDA classification.