Everything Digital Health

"From Punched Cards to SNOMED-CT" - Clinical Terminology in the NHS with Denise Downs

The episode of Everything Digital Health features Denise Downs, a SNOMED‑CT specialist who spent over a decade at NHS Digital driving clinical terminology adoption. She recounts how she moved from a maths teaching career in the punch‑card era to a pivotal role shaping the NHS’s transition from legacy Read codes to modern electronic patient records. Downs explains that in 2009, as hospitals began rolling out EPR systems, NHS Digital created a brand‑new position to raise awareness of SNOMED‑CT and embed it in curricula. Her background in computing, from early mainframes to teaching BBC Micros, gave her the practical insight to bridge technical and clinical worlds, leading projects that integrated SNOMED into training and standards. She illustrates the shift with anecdotes: programming on punch cards, configuring a CRM for a chemical manufacturer where sales reps used encrypted laptops, and noting that today’s GP systems still lack bedside mobility. “We could send a sample request from a laptop in seconds,” she says, highlighting how data standards accelerated business responsiveness. The conversation underscores that robust clinical terminologies are essential for interoperability, real‑time decision support, and scaling digital health across the NHS. As SNOMED‑CT becomes the lingua franca of patient data, its proper implementation will determine the speed and safety of future care delivery.