Portugal: Automated verification of prescriptions helped crack down on medical fraud | AlgorithmWatch

By Paula Simoes

This story is part of AlgorithmWatch’s upcoming report Automating Society 2020, to be published later this year. Subscribe to our newsletter to be alerted when the report is out.

This story is part of AlgorithmWatch’s upcoming report Automating Society 2020, to be published later this year.

Subscribe to our newsletter to be alerted when the report is out.

 

Portugal’s national health service introduced a centralized, automated system to verify medical prescriptions in 2016. One year later, it flagged 20 million euros’ worth of fraud.

Which doctors give more medical prescriptions? Which ones prescribe more expensive medicines? How many doctors have more than 100 packages dispensed in the same pharmacy, on the same day? How many packages are dispensed, in each pharmacy, when the expiration date is about to end?

These are some of the questions answered by the Control and Monitoring Center from the Portuguese Public National Health Service (Centro de Controlo e Monitorização do Sistema Nacional de Saúde, CCM-SNS in its Portuguese acronym), using data from several databases, in order to detect and fight prescription fraud. The “paperless prescriptions” program and the electronic medical prescriptions system were implemented in 2016 and were made mandatory for the public sector, although exceptions were allowed in some cases.

Doctors fill in the prescription in a software certified by the Shared Services of the Ministry of Health (Serviços Partilhados do Ministério da Saúde, SPMS) sign it digitally, either with their citizen card or with their Order of Doctors’ card, and send it to the patient’s mobile phone by text message or email, or print it out. Doctors can also use a mobile app to issue prescriptions, even remotely, by signing them with their Digital Mobile Key, a means of authentication created by the Portuguese government that allows for linking a mobile phone number with a national citizen identification number. Citizens can also use their citizen card to buy the prescribed medicines in a pharmacy.

When the system was announced, back in 2015, the national newspaper Público reported that about 15% of the seven million prescriptions written each month were not bought, either because patients could not afford them or because they decided to forego treatment. The new system lets doctors know if the prescriptions were bought or not. Another novelty is that patients can buy the prescribed medicines from different pharmacies, in case a pharmacy does not have all of them.

Controlling fraud

Besides these motives, as well as an optimization of resources and reduced costs, one of the major motivations for the use of the electronic prescription was to control usage and detect fraud.

Fraud was reduced by 80% during the first year of the new system, according to the National Health Service (SNS). In 2019, 97.28% of the prescriptions in the public health sector were electronic (the share of electronic prescriptions is much lower in the private sector, where the practice is not mandatory.). The system allows the control center of the SNS to quickly monitor and detect irregularities by automatically analyzing patterns in the prescription and dispensation of medicines.

The Control and Monitoring Center uses data from invoices issued by pharmacies and other providers of services, such as medical exams. This data set is complemented by information from electronic or paper prescriptions from the databases of the Ministry of Health, such as the National Prescription Database (Base de Dados Nacional de Prescrições, BDNP); the Vignettes and Prescription Requisition Portal; and the National Medicine Database. The control is made at the prescription phase, where the system verifies that the doctor is registered and can make the prescription, and that the patient exists and can benefit from it.

Phony prescriptions

In 2011, RTP, the public sector broadcaster, reported that the police was investigating a case of fraud that happened in 2009 and 2010, before the new system was in place. Prescriptions had been written in the name of deceased doctors, using falsified signatures, or to deceased patients. Several doctors were using the same professional license number and one doctor made 32,000 prescriptions in only one year – one every 3 minutes. The targets were expensive medicines with a high percentage of reimbursement by the SNS. With a drug costing 100€ and a reimbursement rate of 90%, a pharmacy can get 90€ from the SNS by presenting a prescription written by a doctor, without having sold the medicine. That news report mentioned that medicines represented 40% of all fraud on public expenditure.

Another type of fraud can happen when patients from the public sector are referred to the private sector. In January 2014, SIC, a private TV channel, reported the private health group Sanfil invoiced ADSE, a public health sub-system, for medicines and medical exams that had not been provided to the referred patients.

The fraud control system also uses the Ministry of Health’s National Registry of Health Users, which contains information about the benefits patients are entitled to (the reimbursement rate varies depending on employment status, with different schemes for pensioners and public-sector employees). This allows for the immediate verification of each transaction to the different health providers. The National Commission for Data Protection authorized the practice.

Back in public hands

The computerization of the system of fraud detection for complementary means of diagnosis and therapy dates back to the 1980s. The system was extended to medicine prescriptions in 2003, under the aegis of the Central Administration of the SNS, with data coming from the regional health administrations.

In 2007, the Council of Ministers earmarked over 30 million euros for four years to create and implement the Invoice Control Center (Centro de Conferência de Faturas, CCF), now called Control and Monitoring Center. The project was carried out by a private company, PT Comunicações, from the design to the implementation and operation phase.

Until then, the system to control the invoices involved around 500 workers spread in a variety of offices across the country, leading to high costs for the National Health Service and difficulties in obtaining results in a timely manner. In 2005, there were 23 million prescriptions for complementary means of diagnosis and therapy and 55 million prescriptions for medicine.

At the same time, the Ministry of Health tried to increase the use of electronic prescriptions – from an estimated at 40% at the time. The promise of timely and easy fraud detection was a big motivation for the push towards digitization. However, it could only be done if the entire technological ecosystem was updated to deal with it.

The Invoice Control Center (CCM) started operations in 2010. Two years later, the Information Exploration Unit was created to analyze data gathered by the Center and to detect anomalous and potentially fraudulent situations, to develop a fraud risk analysis model and to forward suspicious cases to the police.

During the first seven years, the central unit detected irregularities amounting to hundreds of millions of euros, and was instrumental in starting many prosecution for fraud in the health system. According to the Ministry of Health, in the first semester of 2017, the Invoice Control Center processed 356.2 million euros’ worth of prescriptions and flagged 21.1 millions euros to the State prosecutor.

Although the Invoice Control Center was always under the Central Administration of the SNS, the management, maintenance, and operation of the center was provided by a private operator until June 2018. At that time, the Council of Ministers transferred responsibilities for this unit to the Shared Services of the Ministry of Health (SPMS), putting it entirely under the control of the public sector.

The government justified the transition by considering the activity of the Center as strategic to the efficiency of the SNS and to the management of the public expenditure. Data protection considerations also played a role.

In December 2019, the adjunct Secretary of State for Health, Jamila Madeira, made an official visit on the premises of the Invoice Control Center. She said the center was a priority for the government because “rigor, transparency and permanent monitoring are essential instruments in the fight against fraud and corruption”. Each month, the center checks 8 millions documents, 70% of them digital.


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