Device specifications, manufacturing procedures, and quality procedures — DMR content from 820.181 remains required within the MDF.
MDF must also include design conformity evidence, risk management file reference, and post-market linkages — broader than the production-focused DMR.
MDF index completeness and retrievability of referenced documents — companies with DMR-only structures miss the design and PMS layers.
Maps to
QMSR / ISO 13485: §820.181 Device master record.
ISO 13485: §4.2.3 Medical device file
Requirement text
For each medical device type or medical device family, the organization shall establish and maintain one or more files either containing or referencing documents generated to demonstrate conformity to the requirements of ISO 13485 and compliance with applicable regulatory requirements. The file(s) shall include, but are not limited to: (a) general description of the medical device, intended use/purpose, and labelling including any instructions for use; (b) specifications for product; (c) specifications or procedures for manufacturing, packaging, storage, handling, and distribution; (d) procedures for measuring and monitoring; (e) as appropriate, requirements for installation; (f) as appropriate, procedures for servicing.
Why this clause exists
Part 820's Device Master Record (820.181) was a production-oriented artifact: it described specifications, manufacturing procedures, and labelling for a finished device. It did not require the organization to maintain a unified lifecycle record linking design evidence, risk management, and post-market outputs to the same device-type index — those records existed in parallel structures without a mandated integration point. ISO 13485:2016 § 4.2.3 introduces the Medical Device File as precisely that integration point: a per-device-type structure that contains or references every document needed to demonstrate that the device was designed, manufactured, and monitored in conformance with the QMS and applicable regulatory requirements. The shift matters because auditors and regulators need a navigable, retrievable entry point into device-specific compliance evidence. When design records, risk management files, production procedures, and post-market surveillance outputs live in disconnected repositories without a cross-reference index, the practical result is that conformity cannot be efficiently demonstrated — and the absence of demonstrability is itself a finding. QMSR preserves the 820.181 DMR as an FDA-Plus overlay, meaning companies must satisfy both: the MDF as the ISO 13485 conformity index, and the DMR content categories as required regulatory records. A well-structured MDF that contains or cross-references all DMR elements satisfies both simultaneously and provides a durable scaffold for future regulatory submissions.
What changed
§820.181 — Part 820 (legacy)
"Each manufacturer shall maintain device master records (DMR's). Each manufacturer shall ensure that each DMR is prepared and approved in accordance with § 820.40. The DMR for each type of device shall include, or refer to the location of, the following information: Device specifications including appropriate drawings, composition, formulation, component specifications, and software specifications; Production process specifications including the appropriate equipment specifications, production methods, production procedures, and production environment specifications; Quality assurance procedures and specifications including acceptance criteria and the quality assurance equipment to be used; Packaging and labeling specifications, including methods and processes used; and Installation, maintenance, and servicing procedures and methods."
§4.2.3 — ISO 13485:2016 (current)
"For each medical device type or medical device family, the organization shall establish and maintain one or more files either containing or referencing documents generated to demonstrate conformity to the requirement of this International Standard and compliance with applicable regulatory requirements. The content of the file(s) shall include, but is not limited to: a) general description of the medical device, intended use/purpose, and labelling, including any instructions for use; b) specifications for product; c) specifications or procedures for manufacturing, packaging, storage, handling and distribution; d) procedures for measuring and monitoring; e) as appropriate, requirements for installation; f) as appropriate, procedures for servicing."
Δ The Medical Device File replaces the DMR concept; scope expands to include intended use/purpose and instructions for use at the top level, and the file must demonstrate conformity to the standard itself, not just production specs.
Common gaps (what we see in audits)
- No Unified Medical Device File — DHR and DHF Not Linked — The organization maintains a Device History Record (production batch evidence) and a Design History File (design evidence) as separate, unlinked repositories. Neither document serves as the top-level MDF index that ISO 13485 4.2.3 requires. An auditor asking for the Medical Device File receives a confused response.
- MDF Missing Labelling and Instructions for Use — The organization’s device file contains specifications and manufacturing procedures but does not include or reference labelling and instructions for use. Under ISO 13485 4.2.3(a), the general description, intended use/purpose, and labelling including instructions for use are explicitly required MDF content.
- MDF Scope Defined Per Batch, Not Per Device Type — The organization structures its device files around individual production lots (Device History Records) rather than per device type or device family. When asked for the Medical Device File for a product line, no single document or index exists — only batch-specific records.
- Installation and Servicing Procedures Absent from MDF — The device file does not include installation requirements or servicing procedures, which ISO 13485 4.2.3(e) and (f) require “as appropriate.” The organization has installation and servicing content in field service manuals but has not incorporated them into or referenced them from the MDF.