| M170 |
Primary gonarthrosis, bilateral |
| M171 |
Other primary gonarthrosis |
| M172 |
Post-traumatic gonarthrosis, bilateral |
| M173 |
Other post-traumatic gonarthrosis |
| M174 |
Other secondary gonarthrosis, bilateral |
| M175 |
Other secondary gonarthrosis |
| M179 |
Gonarthrosis, unspecified |