Summary
On 1 July 2020, the FDA extended the window in which it would exercise “enforcement discretion” for Unique Device Identification (UDI) requirements — standardized date formatting, UDI labeling, and GUDID data submission — for certain class I and unclassified devices to 24 September 2022. But enforcement discretion is not a compliance extension. The underlying compliance date is unchanged, and a long list of implants and life-supporting/life-sustaining (LS/LS) devices are carved out entirely. Read carefully before assuming you have more time.
FDA Extended Enforcement Discretion — Not the Compliance Date
On 1 July 2020, the FDA updated a 2018 guidance document, extending the period in which they would exercise “enforcement discretion” for the UDI requirement (standardized date formatting, UDI labeling, and GUDID data submission requirements) for certain class I and unclassified devices to 24 September 2022.
This guidance, as with the 2018 version, does not change the compliance date – it remains 24 September 2018. FDA is intending to not enforce the UDI requirements for these device types. This is important, as it affects, for example the 3-year existing inventory exception, which remains 24 September 2021.
The trap: “Enforcement discretion” is not the same as a deadline extension. The compliance date stands, and the carve-outs below mean many devices are not covered by this discretion at all. Treating the 2022 date as a blanket reprieve is exactly the mistake this guidance invites.
Implants and Life-Supporting/Life-Sustaining Devices Are Excluded
It is important to note that this guidance does not apply to those devices that are considered implants or Life-Supporting/Life-Sustaining (LS/LS). Moreover, this last UDI compliance date is for both class I devices and those “…devices that have not been classified into class I, class II, or class III.” This last group actually encompasses 2 distinct groups – unclassified and not classified devices. Therefore, we have to look carefully for any device that is an implant and/or Life-Supporting/Life-Sustaining – and is either a class I, unclassified, or not classified device. This also applies to any convenience kit or combination product that contains one of these devices. Also, unlike the 2018 guidance, this guidance does not change the compliance date for the Direct Mark requirement – that is, it remains, as in the 2018 guidance, 24 September 2022. It should also be noted that, while GMP-exempt class I devices are exempt from UDI requirements, they are NOT exempt from the standardized date format requirements (§801.18). This was due 24 September 2018.
Enforcement discretion is a posture, not a postponement. The compliance obligation — and the recordkeeping that proves it — never went away.
Devices That Must Be Fully UDI Compliant
FDA assigns these implanted and LS/LS attributes based on product codes (procodes). A list of those devices types that are NOT subject to the “enforcement discretion” – and therefore must be fully UDI compliant (actually due 24 September 2015) is listed below:
Class 1 Implanted Device
PFO – active implantable bone conduction hearing system
DSW – bag, polymeric mesh, pacemaker
JDT – cap, bone
FKC – clamp, cannula
Unclassified Implanted Device
LFB – button, nasal septal
KGN – dressing, wound, collagen
LCJ – expander, skin, inflatable
PGM – growing rod system
PGN –growing rod system- magnetic actuation
OHA – heart valve, more than minimally manipulated allograft
NVR – intervertebral fusion device with bone graft, solid-sphere, lumbar
PHU – intra-abdominal pressure monitoring device
OKS – lacrimal stents and intubation sets
LLD – port & catheter, implanted, subcutaneous, intraperitoneal
MDI – prosthesis, rib replacement
LZJ – prosthesis, toe (metatarsophalangeal), joint, metal/polymer, semi-constrained
LQS – spermatocele, alloplastic
MRW – system, facet screw spinal device
MTJ – wax, bone
Not Classified Implanted Device
PBU – bone void filler, syringe
NAP – cardiac support mesh wrap
PIX – elbow joint metal/polymer, constrained, porous coated, uncemented prosthesis
QCG – filler, bone void, calcium compound, lower extremity use, use on bone marrow lesions
OYR – filler, bone void, recombinant platelet-derived growth factor
PFE – gastrointestinal liner system
PFM – hemibridge system
PCW – implantable pulse generator, programmer and battery charger
POI – lung tissue sealant for lung volume reduction
QGP – posterior ratcheting rod system
MQO – prosthetic disc nucleus device
PWG – spinal fixation system
PKK – stent delivery system
NGV – system, appendage closure, left atrial
QHP – vertebral body tethering system
Not Classified Life-Sustain/Support Device
QLN – extracorporeal system for carbon dioxide removal
OYR – filler, bone void, recombinant platelet-derived growth factor
QLO – immunoadsorption column for covid-19 use
MSK – immunoassay for blood tacrolimus
How to Stay Ahead of UDI Compliance
The complexity here is not the rule — it is the matching. Determining whether a given product code is an implant or an LS/LS device, then reconciling that against class I, unclassified, and not-classified groupings, is precisely where teams stumble. Getting it wrong means submitting incomplete GUDID records or, worse, assuming you are covered by discretion when you are not.
A Practical Approach to UDI Readiness
- Inventory by procode. Build a complete map of your device portfolio to FDA product codes, then flag every implant and LS/LS attribute against the carve-out lists above.
- Separate the date format obligation. Remember that GMP-exempt class I devices still owe standardized date formatting under §801.18 — exemption from UDI is not exemption from everything.
- Validate your GUDID submission process. Treat data accuracy and completeness as a controlled, repeatable process rather than a one-time push, anchored in sound data integrity practices.
- Govern the records. Labeling, date formatting, and submission evidence are subject to electronic recordkeeping expectations — align them with 21 CFR Part 11 controls.
- Keep systems audit-ready. Sustained compliance across labeling and data systems is easier when they stay continuously validated through Cloud Assurance and a disciplined validation lifecycle.
UDI is not a one-and-done labeling task. It is an ongoing data and quality obligation that touches labeling, recordkeeping, and submission systems — and enforcement discretion does nothing to change that obligation for the device types listed above.
FAQ: FDA UDI Enforcement Discretion
Does FDA’s enforcement discretion change the UDI compliance date?
No. As with the 2018 version, the 2020 guidance does not change the compliance date — it remains 24 September 2018. FDA is stating it intends not to enforce certain UDI requirements for specific class I and unclassified devices until 24 September 2022, but the underlying obligation stands.
Which devices are excluded from the enforcement discretion?
The guidance does not apply to devices considered implants or Life-Supporting/Life-Sustaining (LS/LS). Any device that is an implant and/or LS/LS and is class I, unclassified, or not classified must be fully UDI compliant. This also applies to convenience kits and combination products that contain one of these devices.
Are GMP-exempt class I devices fully off the hook?
No. While GMP-exempt class I devices are exempt from UDI requirements, they are not exempt from the standardized date format requirements under §801.18, which were due 24 September 2018.
What about the Direct Mark requirement?
Unlike the 2018 guidance, this guidance does not change the compliance date for the Direct Mark requirement. It remains 24 September 2022, as in the 2018 guidance.
How does FDA decide which devices are implants or LS/LS?
FDA assigns the implanted and LS/LS attributes based on product codes (procodes). The lists above identify the procodes that are NOT subject to enforcement discretion and must be fully UDI compliant.
Need help mapping your device portfolio to UDI obligations? USDM helps life sciences teams turn complex FDA requirements into validated, audit-ready processes. Contact us to assess your UDI, GUDID, and recordkeeping readiness before the next deadline catches you off guard.