Reported Reactions

Adverse event reports that FDA received

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Device malfunction adverse event reports that record this term

Kind of term
MedDRA preferred term
Plain meaning
the device did not work properly

What a report is

A report is not proof that the drug was the cause of the event.

FDA says:

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview, section "Responsible use of the data". The site read the page on . The data have the reports that FDA received through .

FDA also says:

There is no certainty that the reported event (adverse event or medication error) was actually due to the product. FDA does not require that a causal relationship between a product and event be proven, and reports do not always contain enough detail to properly evaluate an event. The information in these reports has not been scientifically or otherwise verified as to a cause and effect relationship and cannot be used to estimate the incidence of these events.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Source: openFDA, Response of the drug event API (meta.disclaimer). The site read the page on .

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

Reports on file

From July 2004 to June 2026, FDA received 66,314 adverse event reports that record the MedDRA preferred term Device malfunction. In plain words, the term means: the device did not work properly. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 8,111 reports in the 12 months to June 2026 and 5,134 in the 12 months before. FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

By reports in the 12 months to June 2026, this term was number 83 of 1,436 reaction terms with a page. Of the 1,332,454 drug reports that FDA received in the 12 months to June 2026, 8,111 (0.6%) record this term. Reports for male patients were 27.9% of the reports that record this term and 34.6% of all drug reports.

The number of people who use the product is not in the data. A count is not a rate.

MedDRA

The Medical Dictionary for Regulatory Activities. The person who codes a report selects the preferred term that agrees best with the description of the reporter. FDA does not publish the description.

Plain meaning

The device did not work properly. The words are from the fixed dictionary of this site. They add nothing to a report.

Data version

openFDA FAERS release of 29 Oct 2026. Reports received through 30 Jun 2026.

Drugs in these reports

The table has the 89 drug pages with 100 or more reports that record this term. The rows are in order of name. A drug page with fewer reports for this term is not in the table. The counts are the counts that the site keeps for each reaction term, and a count can be lower than the count of FDA.

FDA says:

Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.

Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of . The site read the page on .

Drugs that the reports with the term Device malfunction name as a suspect product, in order of name
DrugClassReports with this term
AbataceptSelective T cell costimulation modulator397
ActemraInterleukin-6 receptor antagonist362
AdalimumabTumor necrosis factor blocker164
Adalimumab-aaty106
Aimovig499
AirsupraCorticosteroid144
Ajovy487
Albuterolbeta2-Adrenergic agonist494
Albuterol sulfatebeta2-Adrenergic agonist1,346
AsmanexCorticosteroid1,109
Asmanex HfaCorticosteroid119
AvonexInterferon beta207
Baclofengamma-Aminobutyric acid-ergic agonist278
Bevespi AerosphereAnticholinergic151
Bimzelx220
BreynaCorticosteroid172
BreztriCorticosteroid800
Budesonide Formoterol110
Budesonide Formoterol Glycopyrronium447
Bydureon1,432
Bydureon Bcise2,231
ByettaGLP-1 receptor agonist311
CosentyxInterleukin-17A antagonist2,504
Device175
DiazepamBenzodiazepine119
DuleraCorticosteroid690
DupixentInterleukin-4 receptor alpha antagonist230
EligardGonadotropin releasing hormone receptor agonist111
EnbrelTumor necrosis factor blocker1,325
Enoxaparin sodiumLow molecular weight heparin344
EntrestoAngiotensin 2 receptor blocker213
EpinephrineCatecholamine119
EstradiolEstrogen334
FasenraInterleukin-5 receptor alpha-directed cytolytic antibody141
FentanylOpioid agonist463
Foraseq114
Gablofengamma-Aminobutyric acid-ergic agonist148
GenosylVasodilator606
Genotropin1,925
Glatopa131
Gsk Autoinjector181
Humira3,445
Humira 40 Mg/0 8 Ml Pen724
HyrimozTumor necrosis factor blocker255
KesimptaCD20-directed cytolytic antibody588
LantusInsulin analog2,082
LevemirInsulin analog216
Lioresal (baclofen)gamma-Aminobutyric acid-ergic agonist236
LisinoprilAngiotensin converting enzyme inhibitor218
LovenoxLow molecular weight heparin179
MethotrexateFolate analog metabolic inhibitor136
MirenaProgestin287
Nemluvio2,066
NeulastaLeukocyte growth factor6,764
NovologInsulin analog288
OmeprazoleProton pump inhibitor102
OmnitropeRecombinant human growth hormone322
OpsumitEndothelin receptor antagonist111
OrenciaSelective T cell costimulation modulator2,085
OzempicGLP-1 receptor agonist440
PegfilgrastimLeukocyte growth factor131
PlegridyInterferon beta570
PraluentPCSK9 inhibitor100
Proair Hfa473
Proventil121
Pulmicort FlexhalerCorticosteroid498
Qvar RedihalerCorticosteroid252
RemodulinProstacycline vasodilator680
RepathaPCSK9 inhibitor529
Risperdal Consta878
SimponiTumor necrosis factor blocker2,463
Solostar2,037
Spravato189
StelaraInterleukin-12 antagonist631
Sumatriptan succinateSerotonin-1b and Serotonin-1d receptor agonist279
Sumavel Dosepro517
SymbicortCorticosteroid2,604
TeriparatideParathyroid hormone analog444
TremfyaInterleukin-23 antagonist1,626
TresibaInsulin analog158
Tudorza PressairAnticholinergic1,268
TyvasoProstacycline vasodilator257
UdenycaLeukocyte growth factor820
VedolizumabIntegrin receptor antagonist182
VeletriProstacycline vasodilator174
VictozaGLP-1 receptor agonist280
WegovyGLP-1 receptor agonist818
Wixela InhubCorticosteroid141
XolairAnti-IgE234

The page of each drug has the count of each reaction term in its reaction lookup.

Drug classes in these reports

The table has the 60 pharmacologic classes with 50 or more reports that record this term. The rows are in order of name.

FDA says:

Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.

Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of . The site read the page on .

Pharmacologic classes of the drugs that the reports with the term Device malfunction name, in order of name
ClassReports with this term
Alkylating drug72
alpha-Adrenergic blocker58
Amide local anesthetic65
Androgen52
Angiotensin 2 receptor blocker244
Angiotensin converting enzyme inhibitor295
Anti-IgE277
Anticholinergic1,695
Atypical antipsychotic187
B lymphocyte stimulator-specific inhibitor56
Benzodiazepine238
beta-Adrenergic blocker349
beta2-Adrenergic agonist2,030
Calcium channel blocker91
Catecholamine205
CD20-directed cytolytic antibody593
Copper-containing intrauterine device76
Corticosteroid7,179
Dopamine-2 receptor antagonist83
Dopaminergic agonist56
Endothelin receptor antagonist262
Estrogen343
Folate analog metabolic inhibitor277
gamma-Aminobutyric acid-ergic agonist662
GLP-1 receptor agonist1,926
GLP-2 analog61
Gonadotropin releasing hormone receptor agonist137
Histamine-1 receptor antagonist58
HMG-CoA reductase inhibitor202
Human immunoglobulin G50
Insulin analog3,180
Integrin receptor antagonist273
Interferon alpha57
Interferon beta808
Interleukin-12 antagonist634
Interleukin-17A antagonist2,583
Interleukin-23 antagonist1,670
Interleukin-4 receptor alpha antagonist246
Interleukin-5 receptor alpha-directed cytolytic antibody163
Interleukin-6 receptor antagonist424
l-Thyroxine99
Leukocyte growth factor7,735
Low molecular weight heparin523
Nitrate vasodilator67
Nonsteroidal anti-inflammatory drug257
Opioid agonist659
Osmotic laxative56
P2Y12 platelet inhibitor109
Parathyroid hormone analog504
PCSK9 inhibitor636
Progestin529
Prostacycline vasodilator1,227
Prostaglandin analog56
Proton pump inhibitor262
Recombinant human growth hormone421
Selective T cell costimulation modulator2,482
Serotonin reuptake inhibitor197
Serotonin-1b and Serotonin-1d receptor agonist374
Tumor necrosis factor blocker4,356
Vasodilator631

A class with many reports in all has many reports for almost every term.

Reports by month

Reports that record Device malfunction, by month, five years to June 2026
05001,00020222023202420252026

FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

Patients in these reports

Age of the patient in the reports that record Device malfunction
AgeReportsShareShare as a bar
Under 21030.2%
2 to 111,0431.6%
12 to 171,3132%
18 to 446,5049.8%
45 to 6412,86719.4%
65 to 747,61811.5%
75 and over4,7997.2%
Age not given32,06748.4%
Sex of the patient in the reports that record Device malfunction
SexReportsShareShare as a bar
Female34,89052.6%
Male18,53427.9%
Unknown or not given12,89019.4%

Age and sex are as the report gives them. 90.6% of these reports give the United States as the country.

Terms near this one

Official pages

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Reported Reactions. Device malfunction: adverse event reports that record this term. https://reportedreactions.com/reaction/device-malfunction/ Source: U.S. Food and Drug Administration, openFDA Drug Adverse Event (FAERS) files, release of . Reports received through .

Where the data come from

The counts come from the openFDA Drug Adverse Event (FAERS) bulk files, release of 29 Oct 2026. The files have the reports that FDA received through 30 Jun 2026. A drug name is the name on the report. The site matches it to a brand name or a generic name of the National Drug Code Directory of 2 Nov 2026. A class is the pharmacologic class (EPC) of the FDA label.

The count has the reports with each spelling of one MedDRA preferred term. The site does not publish a report narrative, a lot number, a detail of a patient or the identity of a reporter. The record of FDA is the authority. See how the site counts reports, the data sources and the corrections page.

Questions

What does Device malfunction mean in an adverse event report?

In plain words: the device did not work properly. It is a MedDRA preferred term. FDA codes the description of a reporter with the MedDRA dictionary. The openFDA files do not have the description itself, and this site does not show it.

Does a drug in the table mean that the drug was responsible for this reaction?

No. FDA says:

No individual drug is connected to any individual reaction.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

When a report lists multiple drugs and multiple reactions, there is no way to conclude from the data therein that a given drug is responsible for a given reaction.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

What does this page tell a person who has this symptom?

This page gives counts of reports. It cannot assess a person. A pharmacist or a clinician can assess a person.

If this is a medical emergency, please call 911.

Source: FDA, MedWatch Online Voluntary Reporting Form. The site read the page on .