System, hemodynamic, implantable: medical device reports filed with FDA

11,974 reports carry this product code, 2015–2026; 6 brands with a page.

Read first · FDA's statement on these data

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. openFDA, FDA

FDA adds: "Although MDRs are a valuable source of information, this passive surveillance system has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data. In addition, the incidence or prevalence of an event cannot be determined from this reporting system alone due to potential under-reporting of events and lack of information about frequency of device use." And: "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices."

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.

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

11,974
reports with this product code: 0.1% of all MAUDE reports; 2,189
reports, 12 months to August 2026: 2,340 in the 12 months before; 62.4%
classified as malfunction: 62.3% across all reports; 1.9%
classified as death, as reported: 0.9% across all reports

Product code MOM is FDA's classification for "System, hemodynamic, implantable" (unknown panel), a class 3 device. 11,974 medical device reports carry this product code, 0.1% of the MAUDE database, from June 2015 to August 2026.

2,189 reports arrived in the 12 months to August 2026, close to the 2,340 of the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (62.4%), injury (35.6%) and death (1.9%). 6 brand names with a page on this site carry this code; the brands table is ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Brands with this product code

Brand	Reports	Latest 12 months	Classified as death	Classified as malfunction
HF Sensor Delivery System	5,311	757	4%	19.3%
Cardiomems Patient Electronic System	4,591	738	0%	98.4%
CARDIOMEMS Power Supply	802	350	0%	99.1%
CardioMEMS Hospital System	470	135	0%	99.6%
Merlin Net / Hf Portal	252	34	0%	98.5%
Power cord 110V	239	93	0%	98.4%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Manufacturers named

Manufacturer (as written on reports)	Reports	Share
St Jude Medical	5,736	47.9%
Abbott Medical	3,411	28.5%
St Jude Medical - Cardiomems	2,197	18.3%

Reports by month, five years

FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

Event type and report source

Event type

Death1.9%226

Injury35.6%4,268

Malfunction62.4%7,477

Other0%3

Not given0%0

Who filed

Manufacturer report99.7%11,943

Voluntary report0.2%26

User facility report0%0

Distributor report0%0

Not given0%5

Grey bar: all 26,136,888 MAUDE reports.

Device problems coded

Device problem (FDA code)	Reports	Share
Material frayed	3,799	31.7%
Incorrect measurementthe device measured wrongly	2,895	24.2%
Device displays incorrect message	1,206	10.1%
Device sensing problem	999	8.3%
Sparking	779	6.5%
Application program problem	674	5.6%
Inappropriate waveform	552	4.6%
Failure to power up	444	3.7%
Intermittent loss of power	136	1.1%
Insufficient device problem information	113	0.9%
Failure to read input signal	111	0.9%
Mechanical problema mechanical problem	110	0.9%
Breakthe device broke	92	0.8%
Migrationthe device moved from where it was placed	89	0.7%
Loose or intermittent connection	71	0.6%
Application program freezes or fails to launch	64	0.5%
Difficult to advance	62	0.5%
Wireless communication problema wireless connection problem	61	0.5%
Electromagnetic interference	48	0.4%
Incorrect, inadequate or imprecise result or readings	46	0.4%

Questions about system, hemodynamic, implantable reports

What is product code MOM?

FDA's classification code for "System, hemodynamic, implantable", class 3, reviewed by the unknown panel. Every device report carries the product code of the device involved.

How many reports carry this code?

11,974 reports through August 2026, 2,189 of them in the latest 12 months.

Which brands appear most often?

HF Sensor Delivery System (5,311), Cardiomems Patient Electronic System (4,591), CARDIOMEMS Power Supply (802), CardioMEMS Hospital System (470) and Merlin Net / Hf Portal (252). Widely used products collect more reports because more people use them.

Can the brands table be used to rank the devices?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." Brands differ in how many are in use, how long they have been sold and how reports are collected.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.