A Material Review Board (MRB) is the cross-functional body that decides what happens to nonconforming material — accept, rework, scrap, or return to supplier. FDA requires documented disposition decisions under 21 CFR Part 820 (QMSR), and ISO 13485 imposes similar requirements under Section 8.3. Without a functioning MRB process, your quality system will accumulate unauthorized dispositions, undocumented deviations, and the kind of record gaps that generate FDA Form 483 observations during inspections.

What is a Material Review Board?

A Material Review Board is a cross-functional committee authorized to evaluate nonconforming material and make binding disposition decisions. The board typically includes members from quality assurance, engineering, manufacturing, regulatory affairs, and procurement. The exact combination varies by organization size and the nature of the nonconformance.

The MRB is not an ad hoc committee. It operates within a documented procedure, with defined roles, quorum requirements, and required signatures. Every decision the MRB makes must be traceable, appearing in an audit trail that regulators can follow from initial detection of the nonconformance through to final disposition and any associated corrective action.

In some organizations, the MRB is also called a Material Review Committee (MRC). The name is secondary. What matters is that the function exists, the authority is defined, and the records are complete.

Why the MRB process matters under FDA regulation

Under 21 CFR Part 820, now consolidated into the Quality Management System Regulation (QMSR) aligned with ISO 13485, manufacturers of medical devices must maintain documented procedures for identifying, documenting, evaluating, segregating, and disposing of nonconforming product. The regulation does not prescribe the exact structure of an MRB, but it requires that anyone who authorizes a disposition decision is qualified and that the decision itself is documented.

According to a white paper published by Pathwise on nonconforming materials compliance, inadequate procedures for nonconforming product appeared among the top ten most frequently cited observations on FDA Form 483 inspections based on FDA FY2015 Inspectional Observation Summaries. [Source: Pathwise] That pattern has persisted. The MRB is where those inadequacies most often originate — because the process is undocumented, the review team is not qualified, or the disposition decisions lack the justification a regulator expects to see.

ISO 13485 Section 8.3 states that organizations must identify and control nonconforming product to prevent its unintended use or delivery. The standard requires documented procedures defining responsibilities for review and disposition. For organizations pursuing ISO 13485 certification or maintaining FDA compliance, the MRB procedure is not optional.

The four disposition options

When the MRB reviews a nonconforming material or product, it has four disposition paths available. Each carries specific documentation and, in some cases, regulatory notification requirements.

Accept as-is

The MRB determines that the nonconformance does not compromise safety, identity, strength, purity, or quality, and that the product is fit for its intended use despite falling outside specification. This decision requires documented technical justification. For medical devices, use-as-is disposition for product that has already left the facility may trigger MDR reporting obligations depending on the nature of the nonconformance. The justification must be in writing, signed by authorized personnel, and linked to the original nonconformance record.

Rework or repair

The nonconforming material can be brought back into conformance through a defined rework process. Rework must itself be controlled — it needs a procedure, personnel qualification records, and post-rework inspection documentation confirming the product meets specification after rework is complete. Reworked product should be re-inspected and re-tested before release. The rework process must not introduce new risks.

Scrap

The material is destroyed or rendered unusable and disposed of in a controlled manner. Scrap decisions still require documentation — including what was scrapped, how much, why, and how the physical destruction was controlled. This prevents scrapped material from re-entering the supply chain.

Return to supplier

Nonconforming incoming material is returned to its source. This disposition typically initiates a root cause investigation on the supplier’s side and may require a Supplier Corrective Action Request through your Supplier Quality Management process. The MRB record should document the return authorization, the supplier notification, and any commitments on corrective action timelines.

Who sits on the MRB

The composition of the MRB depends on what type of nonconformance is being reviewed. A minor dimensional deviation on a purchased component may need only quality and engineering. A sterility failure in a finished medical device requires quality, regulatory, manufacturing, and potentially the design authority.

The procedure should define the minimum required attendees for different categories of nonconformance and who has signature authority — meaning who can formally approve a disposition decision. At minimum, quality assurance must be represented and must concur with every disposition. Engineering input is required when the decision involves technical acceptance criteria or rework feasibility. Regulatory affairs is required when the nonconformance has a potential safety or reporting implication.

Ad hoc decisions made outside the defined process — someone verbally approving a disposition on the production floor without a written record — are exactly what generates 483 observations. The entire point of the MRB is to create a controlled, traceable decision pathway.

What the MRB record must contain

The FDA requires that nonconforming product handling be fully documented. An MRB record that will survive an inspection should include the following:

• A unique identifier for the nonconformance
• Description of the product or material, including lot number, quantity, and location
• Description of the nonconformance — what specification was not met and how the deviation was detected
• Names and roles of MRB members who participated in the review
• The disposition decision with written technical justification
• Signatures of authorized reviewers and the date of each signature
• Whether a CAPA was initiated as a result of the disposition
• Disposition completion date and confirmation of physical handling (scrap certificate, rework inspection results, return shipping records)

For use-as-is dispositions, the technical justification must be especially detailed. Inspectors look for specificity: what risk assessment was performed, what data supported the decision, and who had the authority to accept the product outside specification.

Common MRB failures that generate 483 observations

Most MRB-related 483 observations fall into a few recurring patterns. Knowing them makes it easier to design a process that avoids them.

No documented procedure. The organization handles nonconforming material but has no written MRB procedure defining roles, responsibilities, quorum, and decision criteria. This is a direct 820.90 / QMSR violation.

Incomplete records. The disposition decision is recorded but the technical justification is absent, signatures are missing, or the link between the nonconformance and any resulting corrective action is broken. Inspectors follow the paper trail. Gaps in it raise questions.

Unauthorized dispositions. Someone without defined authority approves a disposition. This happens when the formal MRB process is bypassed under production pressure. The procedure must define who has authority, and that authority must be exercised formally.

No segregation. Nonconforming material is not physically separated from conforming product while awaiting MRB review. If nonconforming material can mix with released product, the control system has failed at a fundamental level.

No CAPA linkage. The nonconformance is dispositioned but no systemic corrective action is initiated for recurring issues. A pattern of use-as-is decisions on the same nonconformance with no CAPA will draw scrutiny from any auditor reviewing the trend data.

How a digital QMS strengthens the MRB process

Paper-based MRB processes introduce delays and documentation risks that a modern eQMS removes. When a nonconformance is detected in a paper system, someone physically walks the form to each MRB member, collects signatures, and files the completed record. That process is slow, easy to lose track of, and difficult to audit in real time.

A digital QMS automates the MRB workflow. When a nonconformance is created, the system routes it to the appropriate reviewers based on product type, nonconformance category, and defined quorum rules. Each reviewer receives a notification, reviews the record in the system, and applies an electronic signature. The audit trail is automatic — every view, comment, and approval is timestamped and attributed. When a CAPA is required, the system links the two records permanently.

Cloudtheapp includes Nonconforming Material and Supplier Quality Management as part of a platform with 60+ pre-built quality, compliance, and operations applications. The Nonconforming Material module supports full MRB workflow routing, disposition tracking, and CAPA linkage, with electronic signatures that meet 21 CFR Part 11 requirements. Inspectors who request nonconforming product records find a complete, searchable history — no missing signatures, no ambiguous dispositions.

To see how this works in practice, schedule a demo with the Cloudtheapp team.

MRB in the context of audits and continuous improvement

The MRB does not operate in isolation. Its outputs feed directly into the broader quality system. Every disposition generates data — what failed, how often, at what stage of production, from which supplier. When that data is trended, it becomes the raw material for systemic improvement.

During internal audits, quality teams should review MRB records as a leading indicator of systemic problems. A pattern of repeat nonconformances with use-as-is dispositions and no corresponding CAPA signals that the organization is managing symptoms rather than root causes. Internal and external auditors will interpret that pattern the same way.

When a nonconformance warrants corrective action, the deviation CAPA record should reference the originating MRB decision so that anyone reviewing the CAPA later understands the full context. This linkage is the kind of traceability that regulators expect in a mature quality system.

Setting up a compliant MRB procedure

If your organization lacks a formal MRB procedure, or if the existing one has gaps, here is where to start.

Define scope. The procedure should specify what triggers an MRB review. Some organizations use a tiered system where minor deviations go through a streamlined single-reviewer approval and major or safety-related nonconformances go to the full board. Document the criteria for each tier.

Define membership and authority. Name the roles, not necessarily specific individuals, that must be represented at each tier. Define who can authorize each disposition type. Use-as-is and scrap may carry different authority requirements.

Define the record format. Whether you use a digital system or a controlled paper form, the record format should be defined in the procedure and all required fields should be explicit.

Define timelines. Nonconforming material should not sit unreviewed for weeks. Set maximum review timelines by nonconformance category and build in escalation paths when reviews are not completed on time.

Connect to trending. The MRB procedure should reference how nonconformance data is compiled, analyzed, and reported, whether monthly, quarterly, or at management review. A deviation report on a recurring nonconformance without trend data attached is a missed opportunity for systemic improvement.

Conclusion

The Material Review Board is one of the most operationally visible parts of a quality system. It is where nonconforming material gets reviewed, documented, and decisively handled, or where the process breaks down under production pressure and creates the documentation gaps that inspectors find later. A well-designed MRB procedure, supported by a digital QMS that enforces workflow and captures every step automatically, removes the manual friction and the compliance risk. The records are complete. The decisions are traceable. The audit trail holds.

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