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Missed calls and after-hours

What should a clinic's WhatsApp appointment messages say?

Medslots team, Letex Media Co.How we write and check facts

Updated 7 min readFacts checked

Short answer

Keep each message short, specific to that patient's booking, and free of discounts or urgency. Booking confirmations, reschedules and missed-call follow-ups often need a pre-approved WhatsApp template if sent outside an active chat, while replies to a patient's own question about timing, directions or fees do not. Copy-ready samples for all six are below.

Key takeaways

  • Booking confirmations, reschedules the clinic starts, and missed-call follow-ups usually need a pre-approved WhatsApp template. Replies to a patient's own question don't.
  • Keep every message specific to that one patient's own booking. No discounts, no urgency, no group messages.
  • Message only patients who gave the clinic their number and agreed to hear from you, and honour every STOP.
  • Send any clinical question that comes back in reply to the doctor. These templates handle scheduling, not medical advice.

Six kinds of WhatsApp message do most of the daily work at a clinic's front desk: confirming a booking, changing it, telling a patient the doctor is running late, giving directions, answering a fee question, and following up a missed call. Copy-ready samples for each are below, along with the one question that trips most clinics up: does this message need Meta's approval first?

Before you send: WhatsApp's rules and the NMC code

Two sets of rules decide whether a message is safe to send: WhatsApp's own template rules, and the NMC code on soliciting patients. Get both right and every template below is safe to reuse.

In practice: a patient's own question about timing, directions or fees is a reply inside that window, so it needs no approval. A booking confirmation sent right after they book in the same chat is also a reply. A reschedule or a running-late message you send first, or a follow-up to a missed phone call, is the clinic opening the conversation, so it usually needs an approved template.

Which of these need a pre-approved template?
MessageWho usually sends the first messageNeeds a pre-approved template?
Booking confirmationThe clinic, right after the patient books in chatNo, if it's a reply in that same chat
ReschedulingEither the patient or the clinicYes if the clinic starts it. No if it's a reply to the patient
Running lateEither side, depending on who notices firstYes if the clinic messages first that day. No if it's a reply
DirectionsAlmost always the patient, askingNo, it's a reply
Fee enquiryAlmost always the patient, askingNo, it's a reply
Missed-call follow-upAlways the clinicYes. A phone call does not open a WhatsApp window

Source: Meta for Developers: Service messages (the WhatsApp customer service window) (checked 17 Sep 2026).A phone call and a WhatsApp message are different channels. Even if the same patient called five minutes ago, messaging them first on WhatsApp counts as the clinic starting the conversation.

Booking confirmation message templates

A confirmation only needs to repeat back what the patient already agreed to. Keep the doctor's name, date, time and fee exact, since a template's approved wording can't change once it's live.

Sample message
Hello [Name], this is [Clinic name]. You're booked with Dr [Doctor name] on [Day], [Date] at [Time]. Consultation fee is [Fee]. Reply here if you need to change it.

Meta charges per template message delivered, under per-message pricing in effect since 1 July 2025, so a confirmation sent as a fresh template costs a little more than one sent as a reply in an open chat. Ask whichever tool sends yours which of the two it's doing.

Rescheduling message templates

Two situations come up here: the patient asks to move their slot, and the clinic needs to move it. The first is a reply. The second is the clinic starting the conversation, so it usually needs a template.

When the patient asks

Sample message
No problem, [Name]. [Day] has [Time] or [Time] free with Dr [Doctor name]. Which one suits you?

When the clinic needs to move it

Sample message
Hello [Name], this is [Clinic name]. Dr [Doctor name] is unavailable on [Date] and we need to move your [Time] appointment. Would [Day], [Time] work instead? Reply here or call us.

Don't soften either message with a discount or a "slots filling fast" line. The words to avoid section further down has a full say-this-not-this table.

Running late, directions and fee enquiry replies

These three are usually replies inside an open chat, since the patient asked first, or you're answering about the same day's booking. That means no template, only a clear, short message.

Running late

Sample messageClinic to patient
Hello [Name], Dr [Doctor name] is running about [X] minutes behind today. Your [Time] slot may start closer to [New time]. Sorry for the wait.
Sample messageReply to a patient running late
No problem, [Name]. Dr [Doctor name] can still see you if you're here by [Time]. After that we may need to move you to [Time] instead.

Directions

Sample message
We're at [Address], next to [Landmark]. [Parking note]. Call us on [Phone] if you can't find it.

Fee enquiry

Sample message
The consultation fee is [Fee]. Would you like us to book a slot for you?

Here is how a fee enquiry usually runs on to a booking. The whole exchange is a reply inside the patient's own chat, so none of it needs a template.

[Clinic name]

Business account

  1. Patient: What is the consultation fee?6:14 pm
  2. [Clinic name]: The consultation fee is [Fee]. Would you like us to book a slot for you?6:15 pm
  3. Patient: Yes, tomorrow if possible6:16 pm
  4. [Clinic name]: Tomorrow has [Time] or [Time] open with Dr [Doctor name]. Which one suits you?6:16 pm
  5. Patient: Evening one6:17 pm
  6. [Clinic name]: Done. You're booked with Dr [Doctor name] tomorrow at [Time]. Reply here if you need to change it.6:17 pm
Sample conversation, not a real patient

A clinical question inside any of these chats, such as whether a symptom needs urgent attention, should go to the doctor. A scheduling reply shouldn't guess at one. For more after-hours samples, see our WhatsApp auto-reply message samples for clinics.

Missed-call follow-up message templates

A phone call doesn't open a WhatsApp window, even when it's the same clinic and the same patient. So the first message you send after a missed call needs an approved template. Our guide to missed calls at your clinic has a full count-and-follow-up worksheet; here is just the message.

Sample message
Hello, this is [Clinic name]. We saw a missed call from this number a short while ago. How can we help?
  1. Step 1: The call goes unanswered

    Missed call

    No WhatsApp message has been exchanged yet, so the caller hasn't opened a messaging window with you.
  2. Step 2: Send one approved follow-up template

    Same day

    A short message asking how you can help. A phone call alone doesn't let you send a free-form WhatsApp message.
  3. Step 3: If they reply, it's a free-form chat

    Answer fees, timings or directions and book the slot, all without a template from here on.
  4. Step 4: No reply: stop

    Don't send a second follow-up message for the same missed call.

If the caller doesn't reply, leave it there. WhatsApp's policy also limits how much a business can message when its message quality is low, which is one more reason not to chase a second time.

Which words should you avoid?

Avoid anything that sells: discounts, urgency and outcome promises. A scheduling message should read like a note from the front desk, not an advert. It also keeps the template in the low-cost Utility category rather than getting recategorised as Marketing, which faces stricter review and a higher price.

Say this, not this
Say thisNot thisWhy
Your reschedule slot is [Time]Rebook today and get 20% offA discount to fill a slot reads as soliciting (NMC reg. 6.1.1)
Would you like a slot with Dr [Name]?Book now, slots filling fast!False urgency can mislead, and the ASCI Code asks that ads don't mislead
Dr [Name] is running about [X] minutes behindSorry, we're overwhelmed today!Stay factual and specific, not apologetic marketing copy, so the template reads as a Utility message
[Clinic name] would like to confirm your visitYou're overdue for treatment!Names a health situation on a phone others in the family may read
Reply STOP if you'd prefer not to get theseNo way to opt outWhatsApp requires businesses to honour every opt-out request

Sources: Indian Kanoon: Indian Medical Council (Professional Conduct, Etiquette and Ethics) Regulations, 2002 (checked 17 Sep 2026); ASCI: The ASCI Code (checked 17 Sep 2026); Meta for Developers: WhatsApp message template categorization (checked 17 Sep 2026).

Before you send any of these

  • The number came from the patient, and they agreed to be messaged.

    A tick box on the registration form, or the fact that they messaged you first, is easy to check later.

  • The message is specific to that one patient's own booking, not a mass update.

  • No discount, no urgency and no promise about results.

  • It ends with an easy opt-out line for anything the patient didn't ask for first.

  • Any clinical question in reply goes to the doctor, not into a scripted answer.

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Common questions

Do WhatsApp appointment messages need Meta's approval first?

It depends on who starts the conversation. Meta's own developer docs say a 24-hour customer service window opens when a patient messages or calls you, and inside that window you can reply with any free-form message. Outside it, or when the clinic messages first, only a pre-approved template can be sent. Checked 17 Sep 2026.

Can I offer a discount to get a patient to rebook?

We would not. The 2002 NMC code, which applies as of 17 Sep 2026, calls soliciting patients directly or indirectly unethical, and a discount to fill a slot is hard to read any other way. Declaring your charges is allowed. Not legal advice.

Do I need patient consent to send these messages?

Yes. WhatsApp's Business Messaging Policy allows a business to message someone only if they gave you their number and you received opt-in permission, and it must honour every request to stop. This applies even to a routine confirmation or follow-up.

What if a patient asks a clinical question when I reply about a reschedule?

Send it to the doctor. A booking message should handle timing, fees and directions only. Guessing at a clinical answer in a scheduling chat isn't safe for the patient or the clinic.

What if a missed-call follow-up gets no reply?

Leave it there. One follow-up message is enough. WhatsApp's policy also limits how much a business can message when its message quality is low, so a second nudge for the same missed call does more harm than good.

Update log

  • : published.