Apple hypertension feature approved based similarity to dissimilar tech [pdf] (www.accessdata.fda.gov)

The FDA cleared Apple’s Hypertension Notification Feature (HTNF) via 510(k) K250507 on September 11, 2025, and issued an administrative correction on September 12 to include the correct 510(k) summary and to assign a new product code (SFR) better reflecting the technology. HTNF is an over‑the‑counter mobile medical app that uses machine‑learning analysis of photoplethysmography (PPG) data collected from the Apple Watch over multiple days to surface notifications for adults who may have hypertension (not intended for pregnant users). The clearance cites substantial equivalence to a Viz.ai predicate (DEN230003) and also includes FDA review and clearance of Apple’s Predetermined Change Control Plan (PCCP). This decision is significant for the AI/ML and digital health community because it reinforces a regulatory pathway for consumer wearables that embed ML‑based cardiovascular notification algorithms. Key implications: (1) PCCP clearance enables Apple to implement certain iterative software changes without submitting a new 510(k) provided changes stay within the approved plan; (2) the device is Class II and subject to Quality System (QS) regulations, UDI, labeling, and adverse‑event reporting requirements; and (3) FDA’s creation of a new product code signals evolving categorization of ML‑based diagnostic/support software. Together, the clearance and PCCP set an important precedent for postmarket, software‑driven innovation in regulated ML medical devices.