📖  This is Part 1. Read Part 2: NHI & Medical Aid — What Should You Actually Do Right Now? →

A note before we start

I've spent years watching medical practices write off income — not because patients refused to pay, but because the claim was coded slightly wrong, the wrong product was billed, or nobody checked whether the condition was a PMB. I wrote this for every doctor, practice manager, and patient who has ever stared at a rejection letter and thought: "But I have medical aid — why wasn't this paid?" Let me walk you through why it happens, and what you can do about it.

The question that should come first

Picture this: Thandi has been on Discovery's most basic hospital plan for 5 years. She ends up needing a laparoscopic cholecystectomy — gallbladder out, standard procedure. Discovery pays R21 000. Her surgeon's invoice is R46 000. She gets a bill for the difference.

Thandi is furious. She has medical aid. She thought she was covered. She wasn't wrong, exactly — but she didn't know the whole picture.

That gap between what the scheme pays and what the specialist charges is predictable, measurable, and — with the right information — avoidable. Let's build that picture from the ground up.

Quick-Translate: 5 terms you need to know

  • Medical Aid (Medical Scheme) — A not-for-profit fund that pools contributions from members to pay healthcare claims. Regulated by the Council for Medical Schemes (CMS) under the Medical Schemes Act 131 of 1998.
  • Gap Cover — A short-term insurance product that pays the shortfall between what your scheme pays and what a specialist charges. Regulated by the FSCA, not CMS. It only pays if your scheme pays first.
  • Health Insurance — A fixed-benefit insurance product (e.g., hospital cash plans). Pays a fixed daily amount regardless of actual costs. Does not replace medical aid or gap cover. FSCA-regulated.
  • Prescribed Minimum Benefits (PMBs) — A legally mandated list of conditions and treatments that every medical scheme must cover in full, on every plan, no matter how basic. Defined in Annexure A of the Medical Schemes Act Regulations.
  • Managed Care Organisation (MCO) — Think of them as the scheme's gatekeepers. They decide whether a procedure should be pre-authorised and whether the clinical protocols were followed before the scheme pays.

3 products. 3 regulators. One very confused patient.

When someone says "I have medical cover," they could mean any 1 of these — or all 3 at once. The problem is they play by completely different rules.

Product Regulator How it pays The catch
Medical Aid CMS Pays actual healthcare costs up to scheme tariff Specialist bills often exceed the scheme tariff
Gap Cover FSCA Covers the shortfall — but only in-hospital Won't pay if the scheme rejects the claim first
Health Insurance FSCA Fixed daily cash payout regardless of actual costs Does not cover actual medical bills — not a replacement for medical aid
⚠️ Bottom line: Gap cover only pays if your scheme pays first. If the claim is coded incorrectly, pre-authorisation was skipped, or the condition wasn't recognised as a PMB, gap cover stays in its pocket. Always.

Who is actually handling your claim?

By the time a claim is paid — or rejected — it has probably passed through 4 different hands. Understanding who does what tells you where to push back when something goes wrong.

Role What they do What goes wrong here
Medical Scheme Owns the money; sets the rules and benefit limits Benefit exhaustion, plan-level limits
Administrator Processes your claim day-to-day on behalf of the scheme Coding errors, delayed remittance advices
MCO Pre-authorises treatment; applies clinical protocols Declined pre-auths, DSP referral issues
Broker Helps you choose and manage your scheme membership Mis-sold plans, wrong benefit advice at inception

SA Market · May 2026   South Africa has 71 registered medical schemes — 16 open to the public and 55 restricted to specific employer groups — covering more than 9.1 million beneficiaries, with 33 administrators, 43 MCOs, and over 10 000 brokers and brokerages active in the market. Source: CMS Annual Report 2024/25

PMBs: the protection most people don't know they have

Here is the part that usually keeps doctors awake at night: Prescribed Minimum Benefits.

Every medical scheme — even the cheapest entry-level plan — is legally required to pay for a defined set of conditions in full. No co-payments. No benefit limits. No plan-level exclusions. The patient doesn't need to be on a comprehensive plan. They just need to have the diagnosis.

Medical Schemes Act 131 of 1998 — PMB Framework: Every registered medical scheme must provide cover for PMB conditions regardless of the plan the member has chosen. The PMB list includes emergency medical conditions, over 270 diagnosis-and-treatment pairs, and 26 Chronic Disease List (CDL) conditions — including diabetes, epilepsy, hypertension, asthma, and HIV/AIDS. → CMS PMB Resource Centre

The phrase "regardless of the option the member has chosen" is doing a lot of work in that sentence. Read it carefully: it means that if your patient has a PMB diagnosis, their scheme must pay — even on a hospital plan costing R900 a month. Schemes know this. And some find ways around it through coding challenges, Designated Service Provider (DSP) rules, and protocol disputes.

Worked example: A patient on Bonitas BonEssential (hospital plan) is diagnosed with Type 2 diabetes — a CDL condition. Their plan's day-to-day benefits are exhausted. But because diabetes is a PMB CDL condition, Bonitas must still fund chronic medication under PMB. If the claim is rejected because "day-to-day benefits are exhausted," that rejection is likely unlawful. The practice should dispute it citing the PMB framework.
🚨 Red Flag Action: If a scheme rejects a claim citing "benefit exhaustion" on a condition that appears on the PMB list, do not write it off. File a formal PMB dispute with the scheme administrator. If unresolved, escalate to the Council for Medical Schemes. Section 59(2) of the Medical Schemes Act sets the 30-day payment obligation.

Gap cover: useful, but not magic

Gap cover fills the shortfall between scheme tariff and specialist billing. But it has hard limits that most people don't discover until they need it. The demarcation regulations (GG 40515) tightly define what gap cover may and may not do.

Gap cover: what it covers Gap cover: what it does NOT cover
In-hospital specialist shortfalls (typically up to 500% of scheme tariff) Out-of-hospital consultations or GP visits
Sub-limit top-ups for defined procedures Claims rejected outright by the scheme
Co-payment waivers on certain admissions Anything beyond the annual individual benefit limit (typically R155 000–R165 000)
Casualty benefit extensions (some policies) Stand-alone dentistry, optometry, or chronic medication
⚠️ Critical sequence: Gap cover is a second-payer product. If the medical scheme doesn't pay first — because of a coding error, an incomplete pre-auth, or an outright PMB dispute — gap cover has nothing to top up. The claim falls entirely to the patient. This is the most common source of unexpected out-of-pocket bills in SA private practice.

Before treatment: the 3 questions that change everything

Whether you're a patient walking into a hospital, or a practice manager prepping a surgical slate, 3 quick checks prevent most claim disasters.

☑ For patients — ask these before admission

  • 1. "Is my diagnosis on the PMB list?" — ask your doctor to confirm.
  • 2. "Do I need a pre-authorisation, and has it been obtained?" — never assume.
  • 3. "Is my specialist in my scheme's ne2rk (DSP), and if not, what will I owe?"

☑ For practices — check before you bill

  • 1. Verify the patient's scheme, plan option, and benefit year status before the appointment.
  • 2. Match the ICD-10 diagnosis code to the PMB list before submission — if it qualifies, flag it.
  • 3. Track the remittance advice for every claim submitted, not just the ones that bounce.

What this means for your practice's revenue

For patients, this explains why bills still arrive. For doctors, it explains why good clinical work still turns into bad debt. The gap is almost never clinical negligence — it is almost always a breakdown somewhere in the billing and coding chain.

A PMB claim rejected because the ICD-10 code was slightly off. A gap cover claim that lapses because the scheme rejected the base claim first. A specialist charge above scheme tariff with no ne2rk negotiation in place. These are not random events. They are predictable failure modes in a system that runs on paperwork.

Discovery-affiliated radiology practice example: A busy Johannesburg radiology practice running 60 studies a week submits claims within 24 hours. But a recurring ICD-10 mismatch on interventional studies means 12–15% of claims are queried. Each query sits for 28+ days. On a billing run of R380 000 per month, that is R45 000–R57 000 in suspended cash at any given time — none of it written off, all of it recoverable with the right resubmission process.

Revenue leakage is not a write-off problem — it's a systems problem. Most practices don't know their real leakage rate because no one has looked. The claim either gets paid eventually or quietly ages off the debtors book. Neither outcome tells you what went wrong or how to stop it happening again.

Want to know what your practice is actually leaving on the table? Request your Revenue Leakage Review →

Up next in Part 2: NHI has been signed into law. Section 33 says medical schemes can only offer "complementary cover" once it's fully implemented. So — should you cancel your medical aid? The short answer is no. Here's the full picture →