What is gap cover, and how is it different from medical aid?
Gap cover is short-term insurance, not a medical scheme. It covers one specific shortfall: the difference between what specialists charge for in-hospital treatment and what a medical scheme actually pays.
It only works alongside a medical scheme. If there is no scheme payment to top up, most gap policies pay nothing — gap cover on its own is not medical cover.
Why the gap exists
Medical schemes pay in-hospital accounts at a set scheme rate. Specialists in private practice — surgeons, anaesthetists, physicians — set their own fees, and those fees can sit well above the scheme rate. The scheme pays its rate; the balance of the bill lands on the patient.
That balance is the gap. It arrives after the operation, when the choices have already been made — often from practitioners the patient never chose, like the anaesthetist assigned to the theatre list.
What gap cover does
A gap policy pays the difference between what the treating specialists billed and what the medical scheme paid for an in-hospital event. Many policies also cover certain co-payments and shortfalls on scheme sub-limits — the policy wording defines exactly which.
Legally, it's a different animal from medical aid: gap cover is an insurance policy regulated as insurance, while a medical scheme is governed by its own legislation with its own rules. Same hospital bill, two different contracts responding to it.
What it does not cover
- Day-to-day costs — GP visits, medicine, dentistry and other out-of-hospital expenses
- Being uninsured — with no medical scheme in place, there is no scheme payment to top up, and the policy has nothing to respond to
- Costs the scheme declined entirely — if the scheme pays nothing for a treatment, most gap policies also pay nothing for it
- The medical scheme contribution itself — gap cover is an add-on, not a substitute
Waiting periods and exclusions
Gap policies carry waiting periods — a set time after taking out the policy before certain benefits pay, often longer for conditions that existed before the cover started. They also carry exclusions: specific treatments, conditions or circumstances the policy will not pay for, listed in the wording.
Both mechanics exist across the industry, and both live in the policy document rather than the brochure. The document is where a claim is won or lost.
The one-line difference
Medical aid is the primary funder of healthcare costs, built under medical schemes law. Gap cover is a top-up insurance policy that responds only where a scheme has already paid and a specialist has billed more. One funds treatment; the other absorbs a specific, in-hospital shortfall.
Terms used on this page
- waiting period
- A set time after claiming (or after taking out cover) before an insurance benefit starts paying out.
- exclusion
- A condition, cause or circumstance a policy specifically will not pay for, listed in the policy wording.
Reviewed July 2026