Clinical classification codes

Coding recommendations

W40.- Total prosthetic replacement of knee joint using cement

W41.- Total prosthetic replacement of knee joint not using cement

W42.- Other total prosthetic replacement of knee joint

The NHS Classifications Service has advised NICE that currently these are the most suitable OPCS-4 codes to describe this procedure. The OPCS-4 classification is designed to categorise procedures for analysis and it is not always possible to identify a procedure uniquely.

This page was last updated: 10 October 2023