Maternity Outcomes Signal System (MOSS) standard operating procedures

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The Maternity Outcomes Signal System (MOSS) was developed by NHS England in response to the East Kent Reading the signals report.

These standard operating procedures, along with the accompanying 8 annexes, explain the responsibilities of trust boards and maternity services, ICBs, regions and the national team in relation to MOSS.

Contents

  1. MOSS standard operating procedures
  2. Annex 1 – MOSS critical safety check
  3. Annex 2 – MOSS access guide
  4. Annex 3 – MOSS chart interpretation guide
  5. Annex 4 – Methodology and data sources
  6. Annex 5 – FAQs
  7. Annex 6 – Standard escalation example
  8. Annex 7 – What is a safety signal system?
  9. Annex 8 – Glossary

MOSS standard operating procedures

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MOSS standard operating procedures

MOSS standard operating procedures

NHS England is not responsible for content on external websites.

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Accessible content

Published 25 November 2025

Annex 1 – MOSS critical safety check

Document

MOSS critical safety check

MOSS critical safety check

  • Microsoft Word
  • 62 KB
  • 11 pages

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MS Word template

Published 25 November 2025

Annex 2 – MOSS access guide

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Annex 2 – MOSS access guide

Annex 2 – MOSS access guide

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 3 – MOSS chart interpretation guide

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Annex 3 – MOSS chart interpretation guide

Annex 3 – MOSS chart interpretation guide

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 4 – Methodology and data sources

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Annex 4 – Methodology and data sources

Annex 4 – Methodology and data sources

NHS England is not responsible for content on external websites.

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Accessible content

Published 25 November 2025

Annex 5 – FAQs

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Annex 5 – FAQs in MOSS

Annex 5 – FAQs in MOSS

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Accessible content

Published 25 November 2025

Annex 6 – Standard escalation example

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Annex 6 – Standard escalation example

Annex 6 – Standard escalation example

NHS England is not responsible for content on external websites.

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Accessible content

Published 25 November 2025

Annex 7 – What is a safety signal system?

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Annex 7 – What is a safety signal system?

Annex 7 – What is a safety signal system?

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025

Annex 8 – Glossary

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Annex 8 – Glossary

Annex 8 – Glossary

NHS England is not responsible for content on external websites.

Summary

Accessible content

Published 25 November 2025