FDA product code · Cardiovascular · Class 2

MXD: Recorder, Event, Implantable Cardiac, (With Arrhythmia Detection)

MXD is FDA's product code for "Recorder, Event, Implantable Cardiac, (With Arrhythmia Detection)": a Class 2 device classified under 21 CFR 870.1025, reviewed by the Cardiovascular panel. FDA flags it as an implant.

510(k) review time for MXD

Across 23 510(k) clearances under MXD decided from 2018-01-01 to 2026-10-06, the median was 57 days from FDA receipt to decision. Half took between 30 and 108 days, and 80% were decided within 117 days. These are past clearances, not a forecast for a new submission.

Days from FDA receipt to 510(k) decision, MXD, decisions 2018-01-01 to 2026-10-06 (n = 23)
Fastest15
25th percentile30
Median57
75th percentile108
80th percentile117
90th percentile144
Slowest193

Source: openFDA 510(k) records, snapshot of 2026-10-06 (openFDA data as of 2026-09-28). Compare 510(k) review times across all device types, see every code side by side in the Clearance Timeline Estimator, or browse the clearances themselves in PredicateScope.

MXD in the public FDA record

Records naming MXD, from openFDA (snapshot of 2026-09-15)
510(k) clearances, all years34
Device recalls10

Counts of records, not of devices or events. Adverse event reports for MXD are in MAUDEScope, as counts with the query shown: MAUDE has no denominator, so a report count is not a rate and does not show that a device caused an event.

FDA-recognized standards that cite MXD

No FDA recognized consensus standard cites MXD by product code. Horizontal standards such as biocompatibility, sterilization and software standards can still apply.

Source: FDA Recognized Consensus Standards, snapshot of 2026-09-01. Search them all in the Consensus Standards Lookup.

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