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Glossary / Telehealth modality laws

Telehealth modality laws

Definition

Telehealth modality laws are the state rules governing how a valid patient-clinician relationship may be established and maintained — whether by asynchronous review, audio-video, audio-only, or in-person — and which services each modality may support.

By Lithos Staff · Updated July 2026

At a glance
  • Govern async vs live vs in-person relationship establishment
  • Drug classes often carry stricter rules than the visit itself
  • Rules change with legislative sessions — continuously monitored
  • Best handled as routing data, not process documentation

The axes that vary

Four questions define a state’s posture: Can the initial relationship be established asynchronously, or does the first encounter need to be live? Is audio-only sufficient, or is video required? Do certain drug classes (controlled substances, sometimes weight-loss or hormone medications) carry stricter modality requirements than the underlying visit? And does anything expire — some states require periodic live or in-person touchpoints to keep prescribing valid.

ONE RULE AREA, FIFTY ANSWERSasync-friendlylive visit required firstdrug-specific limits× six rule areas × continuous change
Fifty states, three broad postures per rule area — and this is one rule area of six. Illustrative pattern, not a legal map; the real matrix shifts continuously.

Encoding the matrix instead of remembering it

Because the answers differ by state and change with legislative sessions, a national program cannot run one flow for all fifty. The operational pattern that works: encode modality rules as routing data — each encounter resolves the patient’s state and the requested treatment against the current matrix and routes to async review, a video queue, or a decline with explanation. When a state amends its rules, the matrix updates and the flows stay put. This is among the highest-leverage pieces of what clinical infrastructure maintains.

Compliance handled, so you can build

Lithos runs the clinicians, pharmacies, and 50-state rules behind your care program — one API.

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Frequently asked questions

Which states allow asynchronous prescribing?

Most permit async establishment for many conditions, a minority require a live first encounter, and drug-class exceptions cut across both — the current per-state matrix is the only reliable answer.

Is audio-only telehealth valid?

In many states for many services, but some restrict which services audio-only supports — video is the safer default where rules are strict.

Who tracks modality changes?

Someone must own it continuously — statutes, board rules, and AG guidance all move. Infrastructure platforms maintain the matrix as part of the product.

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