You're in HIPAA's scope when:
- You're a Covered Entity (provider, plan, clearinghouse) OR
- You're a Business Associate of a Covered Entity (you receive Protected Health Information on their behalf)
Many consumer health apps are NOT in HIPAA scope because the patient is the user and there's no clinician relationship. A direct-to-consumer wellness app may be entirely outside HIPAA. The moment a provider's data flows through you, you're a Business Associate.
Practical implications:
- Sign a BAA (Business Associate Agreement) with every Covered Entity customer
- All PHI must be encrypted at rest + in transit
- Access controls + audit logs + breach-notification protocol required (HIPAA Security Rule)
- Penetration tests + annual risk assessments
Cost: ~$30-150k/year ongoing once you're in scope. A HIPAA-compliant infrastructure provider (Aptible, Datica, AWS with BAA) charges 2-3x standard rates.
Software as Medical Device (SaMD):
- FDA Class I (low risk): notification, not full clearance. Includes some wellness apps.
- Class II (moderate risk): 510(k) clearance required. Typical cost: $500k-$2M, 6-18 months.
- Class III (high risk): PMA (Premarket Approval) — $10M+ and 3-5 years.
Most digital health startups try to stay out of SaMD scope by framing their product as wellness, lifestyle, or workflow rather than diagnosis/treatment. The line is real and FDA-policed. Get regulatory counsel before claiming "tracks blood pressure" vs "monitors hypertension" — those are very different regulatory regimes.