Code Details & Principles for W4420
Code details & principles for
W4420
- Chapter 16 / Ankle
| Code | Description | Chapter/Sub-Chapter | Code Specific Guidance |
|---|---|---|---|
| W4420 | Complex total replacement of ankle (i.e. including custom prosthesis, wedges, internal fixation of fractures) | 16.11.1 Ankle |
Unacceptable Combinations for W4420
| CCSD Code (unacceptable combination) | Narrative (unacceptable combination) | Date Code Added |
|---|---|---|
| W0464 | Complex procedure to mid foot and hindfoot with autogenous bone graft (osteotomy/fusion +/- tendon transfers, fixation) | Pre 2025 |
| W3100 | Bone graft (as sole procedure) | Pre 2025 |
| W8646 | Multiple arthroscopic operations on ankle (including soft tissue +/- bony +/- joint surface procedures) without ligament reconstruction | Pre 2025 |
| W8700 | Diagnostic arthroscopic examination of joint, +/- biopsy (not otherwise specified) (as sole procedure) | Pre 2025 |
| W9020 | Dynamic arthrogram of joint | Pre 2025 |
| W9040 | Injection(s) +/- aspiration, into joint, cyst, bursa - unilateral | Pre 2025 |
| X4810 | Change of cast without general anaesthetic (as sole procedure) | Pre 2025 |
| X4822 | Change of cast under general anaesthetic (as sole procedure) | Pre 2025 |
Coding Principles
These coding principles set out how the authors intend that the codes and narratives within the CCSD Schedule are interpreted and used. The outputs are available to be used by all individual insurers and providers including CCSD and non-CCSD members. Please note that:
- The CCSD Group does not discuss nor determine classifcations, reimbursement or fees - all insurers will have their own view on these matters
- The inclusion of a procedure code and/or its associated coding principles in the CCSD Schedule does not necessarily mean that it is endorsed by all members of the CCSD Group and codes may or may not be included in individual insurers' own Schedules or covered
- The coding principles are non-exhaustive guidelines only - each individual insurer may choose whether or not to adopt an individual combination of codes in practice and you will need to contact the insurer for further information