Medical Aid Claim Rejected: Why It Happens and What It Costs

Updated 2026-07-06 · Written for South African healthcare practitioners by Sphygmos.

A rejected medical aid claim is usually a data problem, not a judgment on the care: scheme systems adjudicate claims automatically, and a single failed check bounces the line. This guide sets out the rejection reasons South African practices see most, the Medical Schemes Act rules that govern how schemes must handle rejections, and what each rejection costs the practice.

How medical schemes decide to reject a claim

South African schemes and their administrators adjudicate claims electronically, line by line. Each line is validated against membership status, benefit availability, scheme rules, authorisation records and the codes it carries: a tariff code for the service and an ICD-10 code for the diagnosis. Any failed check can reject the line before a human ever reads the account.

That has a practical consequence: most rejections are about the claim, not the treatment. The consultation can be entirely legitimate and the claim still bounce because a code, a date, a membership detail or an authorisation number did not survive validation.

The most common rejection reasons in South Africa

Rejection reasons vary by scheme and administrator, but the causes below account for most bounced claims in private practice:

Invalid or missing ICD-10 codes: a diagnosis code absent from a claim line, a code that is not in the South African ICD-10 Master Industry Table (often a US ICD-10-CM code), or a code that is not valid in the primary position.
A diagnosis and tariff code pairing that does not make clinical sense to the scheme's validation rules.
Membership problems: cover lapsed or suspended, the patient not yet active on the date of service, or a waiting period still running.
Benefit problems: day-to-day benefits or savings exhausted, or the service not covered on the member's plan option.
Missing authorisation where the scheme requires it for the service, admission or procedure.
Late submission: the account reached the scheme after the fourth-month window in the Medical Schemes Act regulations.
Duplicates: the same service already claimed, so the second submission is rejected.
Detail errors: wrong membership number, dependant code, practice number or date of service.

The rules a scheme must follow when it rejects a claim

Rejection is regulated. Under the regulations to the Medical Schemes Act, a scheme that considers an account, statement or claim erroneous or unacceptable for payment must notify both the member and the relevant health care provider within 30 days of receiving it, and must state the reasons for that opinion. A rejection without reasons is a rejection the scheme has not finished.

The same regulations give the member and the provider the opportunity to correct a returned account and resubmit it within 60 days of its return. And where a claim is correct and payable, section 59(2) of the Act requires the scheme to pay the benefit owing within 30 days of receiving the claim.

The time limits that decide whether the money is recoverable

Two clocks matter. The regulations bar a scheme from refusing payment for late submission where the account reaches it before the end of the fourth month after the service was rendered, which schemes commonly state as the last day of the fourth month after treatment. A returned account gets its own window: it must be corrected and resubmitted within 60 days of the date it was sent back.

Outside those windows the position hardens. An account first submitted after the fourth-month deadline can be refused as stale, and a returned account left uncorrected past its window can become unrecoverable from the scheme, leaving the practice to pursue the patient or write the amount off.

What rejections cost the practice

Every rejected line is completed work the practice has not been paid for. The direct cost is delayed cash flow; the indirect costs are the ones that compound: staff time to read rejection reasons, correct codes, resubmit and follow up, patient conversations about accounts the scheme declined, and the write-offs that follow when a deadline lapses quietly.

Rejection risk also scales with volume. A practice submitting hundreds of claim lines a month does not need a high rejection rate for the unpaid and reworked portion to become a standing tax on the practice. That is why the economics favour getting claims right at drafting time rather than repairing them after adjudication.

Rejected, short-paid and reversed are different problems

A rejected line is unpaid, and the scheme owes reasons within 30 days. A short-paid line was accepted but reimbursed at the scheme rate, so a balance remains where the practice fee exceeds that rate, and plan rules determine whether that balance falls to the patient. A reversed payment was made and later recovered by the scheme, for example where membership turns out not to have covered the date of service.

The distinction matters because each carries different follow-up and different paperwork, and only the rejection is governed by the correction and resubmission windows in the regulations.

Where Prescribed Minimum Benefits change the picture

Prescribed Minimum Benefits are a defined set of conditions and treatments that registered schemes must fund in terms of the Medical Schemes Act and its regulations, and PMB entitlement is identified on the claim by diagnosis code. A claim that identifies a PMB condition correctly engages funding obligations that an ordinary benefit claim does not.

That makes the ICD-10 code decisive in both directions: an imprecise code can let a PMB episode be adjudicated as an ordinary benefit and rejected when benefits are exhausted, while a correct code puts the claim on statutory ground. Disputes about PMB funding can be escalated to the Council for Medical Schemes.

How Sphygmos helps

Sphygmos drafts claims-ready invoices with the coding requirements built in: every line carries its ICD-10 and tariff codes, drafted against the WHO ICD-10 classification South African schemes validate against, and anything the claim still needs is flagged before submission rather than discovered in a rejection. Each invoice remains a draft under the doctor's review, so what leaves the practice is a claim you have confirmed.

See Sphygmos, the clinical operating system for South African doctors

Frequently asked questions

Why was my medical aid claim rejected?

The most common causes are coding problems (a missing or invalid ICD-10 code, or a diagnosis that does not match the service billed), membership problems (lapsed cover or a waiting period on the date of service), exhausted or excluded benefits, missing authorisation, late submission and duplicate claims. Schemes must say which one applies: under the Medical Schemes Act regulations, a scheme that considers a claim erroneous or unacceptable must notify the member and the provider within 30 days with reasons. The stated reason determines whether the claim can be corrected and resubmitted.

How long do I have to submit a claim to a medical scheme in South Africa?

The Medical Schemes Act regulations bar a scheme from refusing payment for late submission where the account reaches it before the end of the fourth month after the service was rendered. Schemes commonly state this as the last day of the fourth month after treatment. An account returned for correction has its own window: 60 days from the date it was returned.

Can a rejected medical aid claim be resubmitted?

Yes, if the cause is correctable and the window is open. Where a scheme returns an account as erroneous or unacceptable, the regulations give the member and provider 60 days from the return to correct and resubmit it. Rejections for exhausted benefits or excluded services are different: the claim data may be perfect while the plan simply does not fund the service, although Prescribed Minimum Benefit conditions carry their own funding obligations.

Does the scheme have to tell me why my claim was rejected?

Yes. Under the Medical Schemes Act regulations, a scheme that considers an account, statement or claim erroneous or unacceptable for payment must notify both the member and the relevant health care provider within 30 days of receipt, stating the reasons for that opinion. The stated reason is what makes correction and resubmission possible.

If the medical aid rejects the claim, does the patient have to pay?

The account for services rendered is owed to the practice regardless of what the scheme decides, so a rejection can leave the balance with the patient. Whether it stays there depends on the rejection reason: a correctable coding or detail error can be fixed and resubmitted within the regulatory windows, while an exhausted-benefit rejection usually cannot. Patients querying a rejection are entitled to the scheme's reasons, and unresolved disputes can be taken to the Council for Medical Schemes.

What is the difference between a rejected claim and a short-paid claim?

A rejected claim line is unpaid, and the scheme must give reasons within 30 days. A short-paid line was accepted and paid at the scheme's own rate, leaving a balance where the practice fee exceeds that rate; plan rules determine whether the balance falls to the patient. Only the rejection triggers the correction and resubmission windows in the Medical Schemes Act regulations.

How quickly must a medical scheme pay a correct claim?

Section 59(2) of the Medical Schemes Act requires a scheme to pay any benefit owing to a member or a supplier of service within 30 days after the day the claim was received. That clock runs for claims that are correct and acceptable for payment; a claim the scheme returns as erroneous or unacceptable moves onto the correction and resubmission track instead.

Sources

This guide is general information for healthcare practitioners, not billing or legal advice. Verify current tariffs and scheme rules before relying on any detail.