Telehealth is the umbrella term that US law and payers actually operate on. The Health Resources and Services Administration (HRSA) defines it as the use of electronic and telecommunications technologies to support long-distance clinical care, patient and professional education, health administration, and public health. In other words, telehealth includes telemedicine (the clinical act) plus all the non-clinical surfaces around it — scheduling, remote education, care coordination, administrative messaging.
Why the distinction matters to a product team is mostly about money and rules. Medicare pays for a defined list of telehealth services under Section 1834(m) of the Social Security Act, and that statute — not your marketing copy — governs whether a given encounter is reimbursable, where the patient may be located, and which modalities (live video vs. audio-only) qualify. So whenever a stakeholder asks "can we bill for this?", they are really asking a telehealth question, regardless of what the product is named internally.
The practical implication is that you should map each feature to its regulatory bucket early: which surfaces are clinical (and thus carry the full telemedicine compliance load) and which are non-clinical but still touch PHI. A common pitfall is using "telehealth" and "telemedicine" interchangeably in specs and contracts; that ambiguity creates gaps where someone assumes a billing or compliance rule applies — or does not — when the opposite is true. Precise vocabulary here prevents expensive surprises in reimbursement and audits.

