Key Points
- While all PHI (Protected Health Information) is a form of PII (Personally Identifiable Information), not all PII qualifies as PHI.
- PHI is regulated under HIPAA in the U.S., while PII is governed by broader privacy laws, including GDPR and CCPA.
- Organizations handling PHI must implement HIPAA-specific safeguards beyond general PII protections.
- Effective PII and PHI protection requires layered controls: encryption, role-based access controls, risk assessments, employee training, data masking, and documented incident response procedures.
- A compliant IT infrastructure can reduce implementation burden, simplify audits, and limit technical debt as data privacy requirements evolve.
Personally Identifiable Information (PII) and Protected Health Information (PHI) are distinct but equally critical categories of sensitive data, governed by stringent global and industry-specific regulations. As laws surrounding data privacy continue to evolve, mishandling either type of information exposes businesses to severe regulatory penalties, legal liabilities, and reputational harm.
This guide explains PII vs. PHI, explores their legal implications, and provides actionable best practices to safeguard personal and health data. It also highlights the essential technologies and processes needed to achieve compliance with major regulations like GDPR, CCPA, and HIPAA.
Discover how NinjaOne safeguards PII and PHI to help you meet HIPAA requirements.
PII vs. PHI: Key differences
Both PII and PHI represent sensitive data that require strict protection under global and industry-specific regulations. While all PHI is considered PII, not all PII qualifies as PHI. To understand these distinctions better, here’s an overview:
| Personally Identifiable Information (PII) | Protected Health Information (PHI) | |
| Definition | Data that can identify an individual, either directly or indirectly. | A subset of PII specific to healthcare, including medical records, test results, and health plan information. |
| Examples | Names, email addresses, phone numbers, postal addresses, IP addresses, and biometric data. | Medical histories, lab results, health insurance details, doctor’s notes, and treatment plans. |
| Risks of Misuse | Identity theft, privacy invasions, online scams, stalking, extortion, and unauthorized advertising. | Fraud, medical identity theft, unauthorized disclosure of sensitive health details, and emotional or financial harm. |
| Regulatory Framework | Governed by GDPR, CCPA, and other privacy laws. | Regulated by HIPAA in the U.S., with strict requirements for healthcare providers and business associates. |
| Impact of Non-Compliance | Fines, legal action, reputational damage, and loss of customer trust. | Severe fines (up to $1.5 million per violation under HIPAA), legal penalties, and loss of patient trust. |
The distinction between PII and PHI is critical for organizations handling sensitive data. While PII encompasses a broad range of identifying information, PHI is specifically tied to healthcare and subject to stricter regulations. Both require robust security measures, but PHI demands additional safeguards due to its potential for severe harm if mishandled. By understanding these differences, businesses and healthcare providers can implement the right policies, technologies, and training to protect sensitive data and maintain compliance.
Legal implications and compliance (GDPR, CCPA, HIPAA)
The General Data Protection Regulation (GDPR) is Europe’s encompassing data protection law. It regulates the collection, processing, and storage of PII for individuals in the European Union, so if you handle data for EU citizens, GDPR applies to you (even if you aren’t located in the EU yourself). The California Consumer Privacy Act (CCPA) is a similar law enacted in California that stipulates how PII should be handled for residents of the US state.
Generally, GDPR and CCPA require that you take adequate measures to both protect the personally identifiable information you handle and respect the wishes of the data subjects. These measures include:
- Identifying the sensitive data you handle and undertaking risk analysis.
- Implementing technical and organizational processes to protect PII from unauthorized access.
- Protecting data from misuse, including data destruction/loss or unauthorized alteration.
- Disclosing all data collection and processing practices, and their purpose, to your users.
- Collecting and storing only the data required for a specified purpose.
- Providing mechanisms for individuals to access their personal data and request its deletion.
- Notifying subjects in the event that their data has been (or may have been) breached, lost, or accidentally disclosed.
- Disclosing all third parties who will have access to, store, or process data, and making sure that you have guarantees that they are also compliant with relevant regulations.
Penalties for not adhering to GDPR and CCPA can be severe and damaging, ranging from civil penalties in the millions to private legal action if a user has suffered harm as a result of a breach.
For example, Meta (Facebook’s parent company) was previously served with a 1.4 billion dollar fine for transferring PII from the EU to the US in breach of GDPR, while DoorDash has been fined $375,000 for violating CCPA.
Best practices for handling PII and PHI
To ensure compliance with PII and PHI regulations, start by reviewing the original legal texts, as only the laws themselves outline precise requirements. Next, select IT tools and platforms, from desktop software to cloud services, that are already compliant with relevant regulations like GDPR or HIPAA and offer built-in safeguards. This approach simplifies compliance and future-proofs your infrastructure, preventing costly system overhauls or technical debt as your data needs grow.
From there, you can build the infrastructure and enact the organizational practices required to meet the privacy expectations of your users and the legal regulations surrounding the PII and PHI that you handle. At a minimum, this should include:
Data access controls and monitoring
Authentication and authorization using role-based access control (RBAC) should be used to restrict access to PII and PHI to only those who require it. Access should be monitored so that unauthorized access can be detected and stopped.
Data encryption at rest and in transit
Data encryption is vital to any modern digital infrastructure. In the event of a breach, encrypted data cannot be used by an attacker without the encryption key.
Employee training and awareness
Employees and contractors should be aware of their responsibilities towards data privacy, and regular training should take place to reinforce the best practices they should follow.
Data backup and disaster recovery
Data backup is paramount to the continuity of any modern business. If you are handling PHI, HIPAA has additional data backup requirements that you need to satisfy.
Data redaction and masking
You can reduce the implications of a data breach by redacting PII and PHI where it is not required. For example, data shared with third parties can have PII stripped out, eliminating the risk of them being a potential cause of a data breach. Data masking can be used internally to hide PII/PHI from users who do not need to see it to further reduce the potential for accidental disclosure.
Regular data inventory and risk assessment
Know your data. You cannot protect data that you are not aware of, so regularly audit your data collection methods, making sure that you are only collecting the data you require for your stated purpose. Identify what data you have, where it is stored, and how it is used, so that you can perform accurate risk assessments.
Incident response and breach notification procedures
Procedures to detect breaches and notify affected parties should be in place. Once a breach has been detected, the impact should be assessed, and immediate action should be taken to isolate and rectify the attack vector.
Endpoint detection and response (EDR) can assist with this by monitoring endpoints for suspicious activity, proactively mitigating and resolving threats, and notifying security teams.
In addition to this, you should have the required processes in place so that the subjects of the PII and PHI that you store and process are able to request copies of their data, update it, and request its full deletion from your systems. You should also ensure that your staff and contractors follow the required regulations and that they follow data security best practices so that they do not become a vector of cyberattacks.
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Your IT infrastructure must enable healthcare data security, or your business is at risk
It is important that you understand the difference between PII and PHI so that you can ensure the correct procedures are followed. PHI comes with additional healthcare data security requirements and potentially greater repercussions if sensitive health information is misused.
As part of your broader IT strategy, you should ensure that the platforms you use to manage your IT infrastructure and ensure its security are HIPAA compliant, in addition to complying with GDPR and CCPA privacy laws.
NinjaOne provides a HIPAA-compliant remote access and backup, unified in an RMM platform that meets HIPAA data backup requirements, while providing full visibility into complex IT infrastructures. With NinjaOne, you can have confidence that all necessary measures to protect sensitive personal information are observed across your organization and customer touchpoints.
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