W4210: Total prosthetic replacement of knee joint
Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - 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 W4210
Neither code can be billed with the other
- A5420: Injection of therapeutic substance into CSF - as sole procedure
- S4230: Secondary suture of skin
- W0630: Patellectomy
- W0633: Prosthetic replacement of patellofemoral joint - bilateral (as sole procedure)
- W0700: Excision of ectopic bone
- W3100: Bone graft (as sole procedure)
- W3530: Removal of percutaneous wire
- W4200: Complex primary total knee replacement (i.e. including bone graft, augmentation or osteotomy)
- W4212: Minimally invasive knee replacement +/- cement +/- patella resurfacing - unilateral
- W4214: Customised unicompartmental knee replacement
- W4216: Customised bicompartmental knee replacement
- W4218: Customised total prosthetic replacement of knee joint
- W4230: Revision of total knee replacement – unilateral
- W4231: Robotic assisted revision of total knee replacement - unilateral
- W4240: 2 stage revision of total knee replacement for infection - first stage
- W4242: 2 stage revision of total knee replacement for infection - second stage
- W4280: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - bilateral
- W5200: Unicompartmental knee replacement - unilateral
- W5201: Unicompartmental Knee Replacement - bilateral
- W5210: Revision of unicompartmental knee replacement - unilateral
- W5300: Bicompartmental knee resurfacing
- W5722: Excision reconstruction of small joint
- W5723: Excision reconstruction of large joint
- W5800: Conversion of a unicompartmental knee replacement to a total replacement of knee joint
- W5830: Robotic assisted total knee replacement – unilateral +/- cement, +/- patella
- W5831: Robotic assisted total knee replacement - bilateral +/- cement, +/- patella
- W5851: Localised patient specific knee resurfacing arthroplasty - unilateral
- W5852: Localised patient specific twin knee resurfacing arthroplasty - unilateral
- W7580: Open surgical stabilisation of patella, including soft tissue/tendon transfer or release, +/- application of cast (adult)
- W8500: Multiple arthroscopic operations on knee (including meniscectomy, chondroplasty, drilling or microfracture) - unilateral
- W8520: Arthroscopy of knee (including examination under anaesthetic, washout and biopsy) (as sole procedure)
- W8580: Multiple arthroscopic operations on knee (including meniscectomy, chondroplasty, drilling or microfracture) - bilateral
- W8700: Diagnostic arthroscopic examination of joint, +/- biopsy (not otherwise specified) (as sole procedure)
- W9040: Injection(s) +/- aspiration, into joint, cyst, bursa - unilateral
- W9240: Examination/ manipulation of joint under general anaesthetic +/- injection +/- arthrogram (as sole procedure)
- W9020: Dynamic arthrogram of joint
- W5822: Robotic assisted revision of unicompartmental knee replacement - unilateral
- W0850: Partial excision of bone (including exostoses)
- W5821: Robotic assisted unicompartmental knee replacement - bilateral
AXA Health also lists these codes as unacceptable combinations (35)
- W4212: Minimally invasive knee replacement +/- cement +/- patella resurfacing - unilateral
- W4242: 2 stage revision of total knee replacement for infection - second stage
- A5210: Epidural injection (lumbar)
- W5722: Excision reconstruction of small joint
- W8600: Therapeutic arthroscopy operation on cavity of joint (not otherwise specified) (as sole procedure)
- W3100: Bone graft (as sole procedure)
- S4230: Secondary suture of skin
- W9030: Injection(s) +/- aspiration, into joint, cyst, bursa with image guidance - unilateral
- W0633: Prosthetic replacement of patellofemoral joint - bilateral (as sole procedure)
- A5230: Epidurogram +/- epidural injection
- A5220: Epidural injection (thoracic)
- A7350: Local anaesthetic blockade of named major nerve or plexus
- W0850: Partial excision of bone (including exostoses)
- W9240: Examination/ manipulation of joint under general anaesthetic +/- injection +/- arthrogram (as sole procedure)
- W4200: Complex primary total knee replacement (i.e. including bone graft, augmentation or osteotomy)
- W0700: Excision of ectopic bone
- W0632: Prosthetic patello-femoral replacement (as sole procedure) – unilateral
- W8520: Arthroscopy of knee (including examination under anaesthetic, washout and biopsy) (as sole procedure)
- W5200: Unicompartmental knee replacement - unilateral
- W9040: Injection(s) +/- aspiration, into joint, cyst, bursa - unilateral
- W2830: Removal of internal fixation from bone / joint, excluding K-wires +/- image guidance
- W5300: Bicompartmental knee resurfacing
- W8400: Repair of knee ligaments (open or arthroscopic)
- W5723: Excision reconstruction of large joint
- W7580: Open surgical stabilisation of patella, including soft tissue/tendon transfer or release, +/- application of cast (adult)
- W9020: Dynamic arthrogram of joint
- W5201: Unicompartmental Knee Replacement - bilateral
- W0630: Patellectomy
- S5210: Injection into subcutaneous tissue/painful trigger point under local anaesthetic
- W8500: Multiple arthroscopic operations on knee (including meniscectomy, chondroplasty, drilling or microfracture) - unilateral
- W4240: 2 stage revision of total knee replacement for infection - first stage
- W8700: Diagnostic arthroscopic examination of joint, +/- biopsy (not otherwise specified) (as sole procedure)
- W3530: Removal of percutaneous wire
- W4230: Revision of total knee replacement – unilateral
- W4280: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - bilateral
Related codes
- W4280: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - bilateral
- W5831: Robotic assisted total knee replacement - bilateral +/- cement, +/- patella
- W5830: Robotic assisted total knee replacement – unilateral +/- cement, +/- patella
- W4212: Minimally invasive knee replacement +/- cement +/- patella resurfacing - unilateral
- W4218: Customised total prosthetic replacement of knee joint
- W4230: Revision of total knee replacement – unilateral
Frequently asked questions
What is the procedure code for total prosthetic replacement of knee joint?
The procedure code is W4210: Total prosthetic replacement of knee joint +/- cement +/- patella resurfacing - unilateral.
Which insurers list W4210?
W4210 is listed by Bupa, AXA Health, Vitality and WPA. Always confirm the code and cover with your insurer.
Can W4210 be billed with other procedures?
The coding rules say W4210 cannot be billed together with 39 other codes, including A5420 (Injection of therapeutic substance into CSF - as sole procedure), S4230 (Secondary suture of skin), W0630 (Patellectomy). 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.
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