NHS bosses in Somerset say things have changed following the death of a man from Taunton in 2009.
Andrew Prentice suffered from pancreatitis - a debilitating condition which came on overnight.
Afterwards his mum criticised the care he was given which led to a major review of the way he was looked after.
NHS Somerset CCG, Somerset Partnership NHS Foundation Trust and Taunton and Somerset NHS Foundation Trust said: "We they wish to express our sympathy to Mrs Prentice for loss of her son.
"We understand her frustration and feeling that health and social services let her son down.
"We hope that this review and our commitment to take action where possible will bring her some comfort.
"In Somerset, health and social care agencies are working together more and more to ensure services are integrated – this is one of the central aims of the Fit for My Future programme in Somerset.
"After listening to Mrs Prentice’s concerns, Sandra Corry, the Director of Quality and Nursing at Somerset Clinical Commissioning Group (CCG,) together with Taunton and Somerset NHS Foundation Trust and Somerset Partnership NHS Foundation Trust, commissioned an independent external review of Mr Andrew Prentice’s case.
"Professor Brian Toft was commissioned to lead the review. At the time Professor Toft was Principal of Risk Partnerships and Visiting Professor of Patient Safety at Brighton and Sussex Medical School.
"The report concludes that a person suffering from the same or a similar medical condition as Mr Prentice would today find a health and social care environment that is considerably different to the past, and one which has vastly improved.
"The report also makes recommendations where further improvements can be made and these are being reviewed and actioned.
"NHS England South West South has also received the report and acted on the recommendations."
A Somerset County Council spokesperson added: "We understand the frustration this case caused and reiterate our sympathies to Mrs Prentice.
"There have been considerable improvements across the system since the period covered by this review, but more can always be done and we welcome the report and its recommendations which are being taken forward by all the agencies involved."
The review can be found here