International Organization for Standardization
ISO is an independent, non-governmental international organization that develops standards to ensure the quality, safety, and efficiency of products, services, and systems. ISO has published over 25,000 international standards covering almost all aspects of technology and manufacturing.
Structured elements that make up a ISO identifier:
The issuing organization (ISO, or joint like ISO/IEC)
ISOAdditional organizations in joint publications (IEC, ASTM, CEN, etc.)
IECThe type of deliverable (IS, TR, TS, PAS, Guide, etc.)
TRThe unique document number
9001Part number for multi-part standards
1Publication year
2015Edition number (e.g., Ed 5)
5Language code (en, fr, ru, etc.)
enDevelopment stage (WD, CD, DIS, FDIS)
DISStage combined with document type (e.g., DTR for Draft Technical Report)
DTRAmendment or corrigendum reference
Amd 1:2024Relationships between ISO identifiers:
| Relation | Description | Syntax | Example |
|---|---|---|---|
| Amendment | Modifies a base standard by adding, changing, or deleting elements | ISO [Number]:[Year]/Amd [N]:[Year] | ISO 9001:2015/Amd 1:2024 |
| Corrigendum | Corrects technical or editorial errors | ISO [Number]:[Year]/Cor [N]:[Year] | ISO 9001:2015/Cor 1:2016 |
| Addendum | Legacy supplement type adding new material | ISO [Number]:[Year]/Add [N]:[Year] | ISO 2789:2006/Add 1:2008 |
| Part | Multi-part standard relationship | ISO [Number]-[Part]:[Year] | ISO/IEC 17031-1:2020 |
| Series | All-parts reference to a multi-part series | ISO [Number] (all parts) | ISO 9001 (all parts) |
| Bundle | Multiple documents bundled together | [PubID] + [PubID] | BS ISO 26000 + IWA 26 |
| Draft | Draft stage of a document | ISO/[Stage] [Type] [Number] | ISO/DIS 45001 |
| Internal Document | Working documents with N-numbers | ISO/TC [N] [DocNumber] | ISO/TC 176 N 1000 |
| Clause Reference | Reference to specific clause within a document | ISO [Number]:[Year], Clause [N] | ISO 9001:2015, Clause 4.1 |
Lifecycle stages for ISO documents:
| Code | Abbr | Name |
|---|---|---|
| 00.00 | PWI | Preliminary Work Item |
| 10.00 | NP | New Proposal |
| 10.99 | AWI | Approved Work Item |
| 20.00 | WD | Working Draft |
| 30.00 | CD | Committee Draft |
| 40.00 | DIS | Draft International Standard |
| 50.00 | FDIS | Final Draft International Standard |
| 60.00 | PRF | Proof of a standard (pre-publication) |
| 60.60 | IS | International Standard (published) |
| 90.20 | RVD | Review Discontinued |
| 90.60 | WTH | Withdrawn |
| 90.92 | WDT | Withdrawal Decided |
| 90.93 | RVD | Review Verified |
| 95.20 | FPN | Final Proposal for Withdrawal |
| 95.99 | WTH | Withdrawal of International Standard |