ICH Q10 PQS Elements and Change Management System

Last reviewed 15 Oct 2026 · 5 min read

Contents
  1. Overview of the four PQS elements
  2. 1. Process performance and product quality monitoring
  3. Lifecycle application
  4. 2. Corrective action and preventive action (CAPA)
  5. Lifecycle application
  6. 3. Change management system
  7. Lifecycle application
  8. 4. Management review
  9. Lifecycle application
  10. See also
  11. Frequently asked questions
  12. Is ICH Q10 a regulation?
  13. Does a change inside the design space need change control?
  14. How are CAPA and change management connected?
  15. Who should be on the change evaluation team?
  16. References

In short: ICH Q10 describes four elements of a pharmaceutical quality system (PQS): process performance and product quality monitoring, CAPA, change management and management review. This guide is for QA staff and students. It explains each element in plain words and shows how its use differs across the product lifecycle.

Overview of the four PQS elements

Many of these elements already exist in regional GMP rules. ICH Q10 aims to strengthen them and support a lifecycle approach to product quality. The four elements are:

  1. Process performance and product quality monitoring system
  2. Corrective action and preventive action (CAPA) system
  3. Change management system
  4. Management review of process performance and product quality

Apply each element in a way that is proportionate to the lifecycle stage. The four stages used in ICH Q10 are pharmaceutical development, technology transfer, commercial manufacturing and product discontinuation. Companies are also encouraged to look for innovative ways to improve quality.

1. Process performance and product quality monitoring

The company should plan and run a monitoring system that shows processes stay in a state of control and highlights where to improve. Such a system should:

  • Use quality risk management to build the control strategy (parameters and attributes of materials, equipment conditions, in-process controls, finished product specifications, and how often to monitor), allowing timely feedback and feed-forward.
  • Provide tools to measure and analyse those parameters, such as data management and statistics.
  • Analyse the data to confirm the process remains in control.
  • Identify sources of variation so they can be reduced or controlled.
  • Include feedback from inside and outside the company, such as complaints, rejections, non-conformances, recalls, deviations, audits and inspection findings.
  • Build process knowledge, support the design space where one exists, and enable new approaches to process validation.

Lifecycle application

StageHow monitoring is used
Pharmaceutical developmentKnowledge from development monitoring helps set the control strategy.
Technology transferMonitoring during scale-up shows early whether the process fits manufacturing and refines the control strategy.
Commercial manufacturingA well-defined system assures control and finds improvement areas.
Product discontinuationMonitoring such as stability testing continues until studies finish; action on marketed product follows regional rules.

2. Corrective action and preventive action (CAPA)

A company needs a system to act on findings from complaints, rejections, non-conformances, recalls, deviations, audits, inspections and monitoring trends. Investigations should be structured and aim at the root cause. Effort, formality and documentation should match the risk, consistent with ICH Q9. Good CAPA improves products, processes and understanding.

Lifecycle application

StageHow CAPA is used
Pharmaceutical developmentVariability is explored, and CAPA thinking feeds the iterative design work.
Technology transferCAPA supports feedback, feed-forward and improvement.
Commercial manufacturingCAPA is used and the effectiveness of actions is checked.
Product discontinuationCAPA continues, considering product still on the market and other affected products.

3. Change management system

Innovation, continual improvement, monitoring results and CAPA all lead to change. A company needs an effective system to evaluate, approve and implement changes with a high degree of assurance of no unintended consequences. Formality usually differs before and after the first regulatory submission, because post-submission changes may need regulatory filings.

Depending on the lifecycle stage, the system should:

  1. Use quality risk management to evaluate changes, scaled to the risk.
  2. Assess each change against the marketing authorisation, design space (if any) and current process understanding, and decide whether a regulatory filing is needed. Working within an approved design space is not a filing change under ICH Q8, but the change system should still evaluate it.
  3. Involve expert teams (development, manufacturing, quality, regulatory, medical) so the change is technically justified, and set evaluation criteria beforehand.
  4. Evaluate the change after implementation to confirm the objectives were met with no harmful effect on quality.

Lifecycle application

StageHow change management is used
Pharmaceutical developmentChange is normal; document it with formality suited to the stage.
Technology transferManage and document process adjustments made during transfer.
Commercial manufacturingA formal system is needed, with quality unit oversight to ensure science- and risk-based assessments.
Product discontinuationAny later changes still go through the change management system.

4. Management review

Management review gives assurance that process performance and product quality are managed across the lifecycle. In larger firms it may be several reviews at different levels, with a clear route to escalate quality issues to senior management.

It should consider:

  • Results of inspections, audits, other assessments and commitments to authorities
  • Periodic quality reviews: customer satisfaction (complaints, recalls), monitoring conclusions, and effectiveness of changes including those from CAPA
  • Follow-up from earlier reviews

It should lead to actions such as process or product improvements, resource provision or training, and capture and sharing of knowledge.

Lifecycle application

StageHow management review is used
Pharmaceutical developmentChecks the product and process design is adequate.
Technology transferChecks the process can be made at commercial scale.
Commercial manufacturingA structured system that supports continual improvement.
Product discontinuationCovers items such as stability and complaints.

See also

Frequently asked questions

Is ICH Q10 a regulation?

No, it is a harmonised guideline. It is applied through regional GMP expectations and inspections.

Does a change inside the design space need change control?

Under ICH Q10 the company’s change system should still evaluate it, even though no regulatory filing is needed.

How are CAPA and change management connected?

CAPA often results in a change, and the change system then evaluates and implements it and checks the result.

Who should be on the change evaluation team?

People with relevant expertise, such as development, manufacturing, quality, regulatory and medical.

References

  1. ICH Q10 Pharmaceutical Quality System, Step 4, 4 June 2008. International Council for Harmonisation. https://database.ich.org
  2. ICH Q9(R1) Quality Risk Management, Step 4, 18 January 2023. ICH.
  3. ICH Q8(R2) Pharmaceutical Development, Step 4, August 2009. ICH.

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