What is the use of blockchain in EHRs?

In healthcare, a blockchain is a database of health information stored in blocks, making it more secure. In 2022, the healthcare industry further embraced blockchain technology, with its market share in the supply chain management application category surpassing 26%. Blockchain can enhance data security, interoperability, and patient control in electronic health records (EHRs) by providing a secure, encrypted health information record that can be shared across healthcare providers. 

Understanding EHR and its challenges

EHRs are designed to centralize patient data, enabling information sharing across different healthcare providers. They contain health information, including medical histories, diagnoses, medications, immunization dates, and lab results. Despite their advantages, current EHR systems face several challenges: 

• Data security concerns: EHRs are targets for cyberattacks due to the sensitive nature of the information they store. Data breaches can lead to unauthorized access, alteration, or destruction of patient records. The centralized nature of most EHR systems makes them particularly vulnerable to these threats.
• Interoperability issues: One of the biggest hurdles in managing EHRs is ensuring interoperability. Currently, many EHR systems operate in silos, making it difficult for providers to access and share patient information efficiently.
• Patient control and consent: Patients often have limited control over who can access their health information. Traditional EHR systems typically require patients to trust that healthcare providers and institutions will manage their data responsibly. 

How blockchain can enhance EHR systems

• Data security and integrity: Once data is added to a blockchain, it cannot be altered or deleted, keeping patient records accurate and consistent. It provides a reliable and tamper-proof history of patients’ health information. Additionally, blockchain uses advanced cryptography to secure data, making it difficult for unauthorized parties to access sensitive patient information.
• Interoperability between providers: Blockchain’s decentralized nature allows for a unified platform where healthcare providers can access and share EHRs. Instead of storing data in a single location, blockchain distributes it across a network of computers (nodes), each holding a copy of the entire blockchain. With multiple locations, authorized providers can access patient data regardless of the system they use.
• Patient control and consent management: Blockchain gives patients greater control over their health information. Through blockchain-enabled smart contracts—self-executing contracts with the terms of the agreement directly written into code—patients can manage access to their EHRs. 

Blockchain’s role in HIPAA compliance for EHR

Blockchain's encryption and decentralized access controls align well with HIPAA, which states, "The Security Rule requires covered entities to maintain reasonable and appropriate administrative, technical, and physical safeguards for protecting e-PHI.". By only giving authorized individuals access to patient records, it helps healthcare providers meet HIPAA security requirements.

FAQs

Can blockchain technology improve patient consent management in EHR systems?

Blockchain can streamline patient consent management with smart contracts that automate and securely record patient permissions. 

How does blockchain affect the storage of large medical files, like imaging data, in EHR systems?

Blockchain is not typically used for storing large files directly. Instead, it stores references or hashes of these files, ensuring their integrity while the data remains stored off-chain in secure databases.

What role can blockchain play in preventing healthcare fraud?

Blockchain can help prevent healthcare fraud by providing a tamper-proof record of transactions, making it difficult for malicious actors to alter patient records or billing information undetected.

Related: HIPAA Compliant Email: The Definitive Guide.