Total hip replacement (THR)
Primary total hip replacement, cemented or uncemented.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
A practical guide for insured patients
Hip and knee procedure code finder
A practical guide from Mr Mohamed Mussa, Consultant Hip and Knee Surgeon at Precision Joint Clinic. Search insurance procedure codes for hip replacement, knee replacement, revision and injections before discussing authorisation with your insurer.
A code is not an authorisation or a quotation. Codes and insurer requirements can change. Hospital cover, surgeon fees, robotic assistance and any excess must be confirmed separately. A listed code does not mean that a treatment is suitable for you.
Searches procedure names, codes and common terms. Filter below by joint or treatment.
Choose your insurer for a reminder of what to confirm before treatment. The procedure list is a guide, not a statement of cover.
24 procedures listed
Complex primary hip replacement
Primary hip surgery requiring additional reconstruction.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Revision hip replacement
Revision of a hip replacement without additional reconstructive procedures.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Complex revision hip replacement
Hip revision with additional reconstruction or bone grafting.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Infected hip: first-stage revision
First stage of a planned two-stage hip revision for infection.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Infected hip: second-stage revision
Second stage of a planned two-stage hip revision for infection.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Total knee replacement (TKR)
Primary total knee replacement.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Complex primary knee replacement
Primary knee surgery with additional reconstructive work.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Partial knee replacement
Replacement of one knee compartment.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Revision knee replacement
Revision of a previous total knee replacement.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Infected knee: first-stage revision
First stage of a planned two-stage knee revision for infection.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Infected knee: second-stage revision
Second stage of a planned two-stage knee revision for infection.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Conversion of a partial knee replacement
Changing a partial knee replacement to a total replacement.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Image-guided injection or aspiration
Injection or aspiration of a joint or related tissue using image guidance.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Hip replacement after previous surgery
Conversion to a total hip replacement following certain previous hip operations.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Bilateral hip replacement
Replacement of both hip joints.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Hip liner and head exchange
Exchange of the hip bearing components.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Knee liner exchange
Exchange of the tibial bearing insert.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Revision of a partial knee replacement
Revision surgery involving a unicompartmental knee replacement.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Injection or aspiration without image guidance
Joint or related tissue injection or fluid aspiration without imaging guidance.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Viscosupplement injection: one joint
Injection of a viscosupplement into one joint.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Aspiration or biopsy of a replaced hip
Sampling or contrast investigation when assessing a hip replacement.
Source and checking date
AXA Health procedure schedule
Checked 19 October 2026. Confirm the code and cover with your treating team and insurer.
Robotic total knee replacement
Robot-assisted total replacement of one knee.
Source and checking date
Aviva coding update, June 2024 (historical reference)
Checked 19 October 2026. This dated coding reference does not confirm current insurer acceptance. Confirm the code and cover with your treating team and insurer.
Robotic partial knee replacement
Robot-assisted replacement of one knee compartment.
Source and checking date
Aviva coding update, June 2024 (historical reference)
Checked 19 October 2026. This dated coding reference does not confirm current insurer acceptance. Confirm the code and cover with your treating team and insurer.
No matching procedure found
Try a joint name, fewer words or a code. The secretary can help with procedures not listed here.
What about robotic surgery or Arthrosamid?
Robotic knee entries in this finder are supported by a dated insurer coding reference and require current confirmation. For robotic hip replacement, ask the secretary for the appropriate code for your insurer and planned operation. There is no universal robotic authorisation for every insurer. Your insurer may request separate information or coding for robotic assistance. Do not use a general injection code to assume Arthrosamid is covered. Ask the secretary to confirm the proposed treatment and coding before contacting your insurer.
Ask Harkeet about a code →Using your procedure code
- Ask your treating team to confirm the planned operation and its code.
- Ask your insurer to confirm cover for the procedure, surgeon and hospital, including any excess or shortfall.
- Keep your authorisation reference and share it with the hospital and practice secretary before treatment.
Considering treatment with Mr Mussa? Explore consultation fees and insurance information or arrange an assessment in Coventry or Worcester.
Sources reviewed 19 October 2026. Each entry links to its reference; dated coding updates are identified separately. Main reference: AXA Health schedule of procedures. Descriptions above are plain-language summaries. Other insurers may apply different coding or authorisation rules.
Questions about procedure codes
What is the procedure code for a hip replacement?
W3712 is listed for a primary total hip replacement. Complex surgery and revision surgery use different codes. Your treating team must confirm the code that describes your planned operation.
What is the procedure code for a knee replacement?
W4210 is listed for a primary total knee replacement and W5200 for a unicompartmental (partial) knee replacement. Complex and revision procedures have separate codes. Confirm the planned procedure with your clinical team.
Does a procedure code confirm insurance cover?
No. Ask your insurer to confirm the proposed procedure, hospital, surgeon, authorisation and any excess or shortfall. Robotic assistance or a particular injection treatment may require additional information.
Check with your insurer
Choose a resource below for the insurer’s own information. These links are not a list of treatments covered under your policy.
Allianz Partners
Use the member support route specified by your Allianz policy; plans and administrators differ.
Visit Allianz Partners resource →Aviva
Coding update archive. Confirm current coding and benefits with Aviva; an archived entry is not approval.
Visit Aviva resource →AXA Health
Published procedure schedule. Confirm the proposed treatment and any coding restrictions.
Visit AXA Health resource →Healix Health Services Ltd
Use Member Zone or your scheme contact to check benefits and approval.
Visit Healix Health Services Ltd resource →VitalityHealth
Official provider fee finder. A published fee does not establish your policy cover.
Visit VitalityHealth resource →WPA
Official medical fee schedule and guidance. Confirm authorisation before treatment.
Visit WPA resource →Bupa Global
International policy approval guidance. Do not assume the UK Bupa schedule applies.
Visit Bupa Global resource →Bupa
Official code search. Confirm your UK policy benefits and any authorisation requirements.
Visit Bupa resource →