ICD-10 codes in South Africa: the authorisation guide
South African medical schemes decline authorisations on coding far more often than on clinical merit. A correct primary ICD-10 code establishes what is wrong; the secondary pathology codes and the evidence attached to them establish why funding it is medically necessary. This guide maps the codes specialists use most and the documentation each one needs to survive assessment.
How schemes actually read your codes
Assessors work from scheme rules and exclusion lists before they read clinical narrative. A single primary code that appears on a cosmetic exclusion list — breast hypertrophy, eyelid ptosis, abdominal contouring — is frequently rejected automatically, regardless of the letter attached to it.
The counter is a documented pathology chain: the primary diagnosis, the secondary conditions it causes, objective measurements for each, and a dated record of the conservative treatment that failed. Coded that way, the request is assessed as a functional impairment rather than an aesthetic preference.
Where the condition falls inside the Prescribed Minimum Benefits, say so explicitly. The Council for Medical Schemes has issued guidance on PMB funding obligations — including Circular 40 of 2014 — and citing the applicable provision in the motivation forces the scheme to answer on entitlement rather than on scheme-option benefit limits. Confirm the current wording on the Council for Medical Schemes site before you quote it, and check the code itself against the South African ICD-10 master industry table.
Searchable ICD-10 justification table
Search by code, condition or keyword, or filter by specialty.
| Code | Condition | Role | Justification to document |
|---|---|---|---|
| N62 | Hypertrophy of breast (macromastia)Plastic & Reconstructive | Primary pathology | On its own N62 is routinely read as a cosmetic indication. Pair it with the functional sequelae below and document breast tissue resection weight per side, bra-strap grooving and the duration of conservative management. |
| M54.2 | Cervicalgia (neck pain)Plastic & Reconstructive | Secondary pathology | Documents the musculoskeletal load caused by macromastia. Record pain scores over time and the failed physiotherapy or analgesic course that preceded the request. |
| M54.6 | Pain in thoracic spinePlastic & Reconstructive | Secondary pathology | Supports a functional rather than aesthetic indication when combined with postural assessment findings and imaging where available. |
| L30.4 | Erythema intertrigoPlastic & Reconstructive | Secondary pathology | Recurrent inframammary intertrigo that has failed topical treatment is objective evidence of a medical, not cosmetic, indication. Attach dated clinical photographs and the treatment record. |
| H02.4 | Ptosis of eyelidPlastic & Reconstructive | Primary pathology | Fund only when visual field impairment is proven. Submit a formal visual field test showing superior field loss and margin-reflex distance measurements. |
| K08.1 | Complete loss of teeth due to accident, extraction or local periodontal diseaseDental | Primary pathology | Anchors implant and prosthodontic motivations. State the aetiology explicitly — trauma or periodontal disease reads very differently from elective replacement. |
| K05.3 | Chronic periodontitisDental | Primary pathology | Supports periodontal surgery and subsequent restorative work. Include pocket depth charting, mobility grading and radiographic bone loss. |
| K07.6 | Temporomandibular joint disordersDental | Secondary pathology | Links occlusal reconstruction to a functional disorder. Document joint noise, restricted opening in millimetres and failed splint therapy. |
| N40 | Hyperplasia of prostate (BPH)Urology | Primary pathology | For Rezūm or other minimally invasive therapies, pair with IPSS score, uroflowmetry, post-void residual volume and the failed medical therapy timeline. |
| R33 | Retention of urineUrology | Secondary pathology | Acute or chronic retention escalates urgency and is a strong counter to a 'watchful waiting' rejection. Record catheterisation events with dates. |
| N39.0 | Urinary tract infection, site not specifiedUrology | Secondary pathology | Recurrent UTI secondary to obstruction demonstrates ongoing harm from deferral. List culture results and dates. |
| C61 | Malignant neoplasm of prostateUrology | Primary pathology | Oncology diagnoses attract Prescribed Minimum Benefit protection. Cite the PMB entitlement alongside histology, Gleason score and staging. |
| M17.1 | Other primary gonarthrosis (knee osteoarthritis)Orthopaedic | Primary pathology | Attach Kellgren-Lawrence grading and joint space narrowing measurements, plus the documented course of physiotherapy, injections and analgesia that failed. |
| M16.1 | Other primary coxarthrosis (hip osteoarthritis)Orthopaedic | Primary pathology | Support with Harris Hip Score or equivalent functional measure and a dated conservative-treatment timeline. |
| M41.1 | Juvenile idiopathic scoliosisOrthopaedic | Primary pathology | Serial Cobb angle measurements showing progression are the single most persuasive piece of evidence. Include bracing compliance records. |
| M51.1 | Lumbar and other intervertebral disc disorders with radiculopathyOrthopaedic | Secondary pathology | Correlate imaging with a documented neurological examination — dermatomal deficit, reflex changes, straight-leg raise — or the scheme will treat it as imaging-only. |
| Z98.8 | Other specified postprocedural statesCross-specialty | Secondary pathology | Use for revision and staged procedures so the request is not assessed as a new elective episode. Reference the original procedure date and authorisation number. |
| T88.9 | Complication of surgical and medical care, unspecifiedCross-specialty | Secondary pathology | Signals that the current request addresses a complication rather than an elective preference. Always pair with a specific complication code where one exists. |
Beating a cosmetic-exclusion rejection
- Lead with function, not appearance. The primary code stays clinically accurate, but the motivation opens on the functional deficit.
- Add every secondary pathology code you can evidence. Each one needs its own objective marker — a pain score, a measurement, a culture result, an image.
- Show the conservative-treatment timeline. Dates, modality, duration and outcome. "Failed physiotherapy" without dates is treated as unsubstantiated.
- Name the benefit basis. If the condition is a PMB, state the entitlement and cite the applicable Council for Medical Schemes guidance.
- Escalate in writing. A Level-2 appeal that restates the same letter fails. Add the evidence the first decision did not address.
Let the chassis assemble the motivation
FlowSuite maps primary pathologies to their supporting secondary diagnoses automatically and builds the motivation and appeal around the evidence you already captured — across dental, urology, plastics and orthopaedics.
See the platformsThis guide is general information for healthcare practitioners, not clinical, coding or legal advice. Code descriptions and scheme rules change — always verify against the current South African ICD-10 master industry table and the relevant scheme's rules before submission.