W4230: Revision of total knee replacement – unilateral
For guidance only. Always check the code and obtain authorisation from your insurer before treatment. Other insurers may use different codes and coding rules.
Also known as
For guidance only. Procedure codes and descriptions on this site are provided for general guidance only and are not a guarantee of insurance cover or payment. Always check the correct code with your surgeon's secretary and obtain authorisation from your insurer before treatment. Insurers shown are examples only. Other insurers are available, and each may use the same, similar or different codes and coding rules.
Insurer listing
| Insurer | Status | Notes |
|---|---|---|
| Bupa | Listed | Listed by Bupa |
| AXA Health | Listed | Listed by AXA Health |
| Vitality | Listed | Listed by Vitality |
| WPA | Listed | Listed by WPA |
Codes that can't be billed with W4230
Neither code can be billed with the other
- W8700: Diagnostic arthroscopic examination of joint, +/- biopsy (not otherwise specified) (as sole procedure)
- W0630: Patellectomy
- W4200: Complex primary total knee replacement (i.e. including bone graft, augmentation or osteotomy)
- W4280: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - bilateral
- S4230: Secondary suture of skin
- W2830: Removal of internal fixation from bone / joint, excluding K-wires +/- image guidance
- W5201: Unicompartmental Knee Replacement - bilateral
- W3100: Bone graft (as sole procedure)
- W5300: Bicompartmental knee resurfacing
- W9040: Injection(s) +/- aspiration, into joint, cyst, bursa - unilateral
- W5852: Localised patient specific twin knee resurfacing arthroplasty - unilateral
- W5830: Robotic assisted total knee replacement – unilateral +/- cement, +/- patella
- W8500: Multiple arthroscopic operations on knee (including meniscectomy, chondroplasty, drilling or microfracture) - unilateral
- W5200: Unicompartmental knee replacement - unilateral
- W4210: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - unilateral
- W9020: Dynamic arthrogram of joint
- W5822: Robotic assisted revision of unicompartmental knee replacement - unilateral
- W5821: Robotic assisted unicompartmental knee replacement - bilateral
W4230 can't be billed with
- W8580: Multiple arthroscopic operations on knee (including meniscectomy, chondroplasty, drilling or microfracture) - bilateral
- W5210: Revision of unicompartmental knee replacement - unilateral
- W5800: Conversion of a unicompartmental knee replacement to a total replacement of knee joint
- W4214: Customised unicompartmental knee replacement
- W4216: Customised bicompartmental knee replacement
- W4218: Customised total prosthetic replacement of knee joint
- W4244: Tibial liner exchange in total knee replacement
- W5851: Localised patient specific knee resurfacing arthroplasty - unilateral
- W5831: Robotic assisted total knee replacement - bilateral +/- cement, +/- patella
AXA Health also lists these codes as unacceptable combinations (20)
- W4210: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - unilateral
- W9040: Injection(s) +/- aspiration, into joint, cyst, bursa - unilateral
- W9030: Injection(s) +/- aspiration, into joint, cyst, bursa with image guidance - unilateral
- W8500: Multiple arthroscopic operations on knee (including meniscectomy, chondroplasty, drilling or microfracture) - unilateral
- S5210: Injection into subcutaneous tissue/painful trigger point under local anaesthetic
- W2830: Removal of internal fixation from bone / joint, excluding K-wires +/- image guidance
- W8700: Diagnostic arthroscopic examination of joint, +/- biopsy (not otherwise specified) (as sole procedure)
- W5800: Conversion of a unicompartmental knee replacement to a total replacement of knee joint
- W5300: Bicompartmental knee resurfacing
- W4200: Complex primary total knee replacement (i.e. including bone graft, augmentation or osteotomy)
- W4280: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - bilateral
- W5210: Revision of unicompartmental knee replacement - unilateral
- S4230: Secondary suture of skin
- W3100: Bone graft (as sole procedure)
- A7350: Local anaesthetic blockade of named major nerve or plexus
- W5200: Unicompartmental knee replacement - unilateral
- W9020: Dynamic arthrogram of joint
- W4244: Tibial liner exchange in total knee replacement
- W5201: Unicompartmental Knee Replacement - bilateral
- W0630: Patellectomy
Related codes
- W4231: Robotic assisted revision of total knee replacement - unilateral
- W5210: Revision of unicompartmental knee replacement - unilateral
- W4242: 2 stage revision of total knee replacement for infection - second stage
- W4240: 2 stage revision of total knee replacement for infection - first stage
- W5800: Conversion of a unicompartmental knee replacement to a total replacement of knee joint
- W4218: Customised total prosthetic replacement of knee joint
Frequently asked questions
What is the procedure code for revision of total knee replacement – unilateral?
The procedure code is W4230: Revision of total knee replacement – unilateral.
Which insurers list W4230?
W4230 is listed by Bupa, AXA Health, Vitality and WPA. Always confirm the code and cover with your insurer.
Can W4230 be billed with other procedures?
The coding rules say W4230 cannot be billed together with 27 other codes, including W8700 (Diagnostic arthroscopic examination of joint, +/- biopsy (not otherwise specified) (as sole procedure)), W0630 (Patellectomy), W4200 (Complex primary total knee replacement (i.e. including bone graft, augmentation or osteotomy)). See the full list above.
About the surgeon
Mr Jakub Kozdryk, Consultant Orthopaedic Surgeon, performs hip and knee replacement and revision surgery at Nuffield Health Warwickshire and Circle Meriden Hospital.
Revision knee replacement with Mr Kozdryk →Book an appointment with Mr Kozdryk →
For guidance only. Procedure codes and descriptions on this site are provided for general guidance only and are not a guarantee of insurance cover or payment. Always check the correct code with your surgeon's secretary and obtain authorisation from your insurer before treatment. Insurers shown are examples only. Other insurers are available, and each may use the same, similar or different codes and coding rules.
Codes and descriptions are for guidance only. Insurer listing and cover information is taken from each insurer's published schedule and is for guidance only: always confirm the code and cover with the insurer before treatment. This site is not affiliated with CCSD or any insurer. No fees are shown.
Last checked: 2026-10-01