ICD-10-CM · Chapter 13 · M00-M99
M22 Disorder of patella
Excludes 2 (not included here)
- traumatic dislocation of patella (S83.0-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| M22..0 | Recurrent dislocation of patella | No |
| M22..00 | Recurrent dislocation of patella, unspecified knee | Yes |
| M22..01 | Recurrent dislocation of patella, right knee | Yes |
| M22..02 | Recurrent dislocation of patella, left knee | Yes |
| M22..1 | Recurrent subluxation of patella | No |
| M22..10 | Recurrent subluxation of patella, unspecified knee | Yes |
| M22..11 | Recurrent subluxation of patella, right knee | Yes |
| M22..12 | Recurrent subluxation of patella, left knee | Yes |
| M22..2 | Patellofemoral disorders | No |
| M22..2X | Patellofemoral disorders | No |
| M22..2X1 | Patellofemoral disorders, right knee | Yes |
| M22..2X2 | Patellofemoral disorders, left knee | Yes |
| M22..2X9 | Patellofemoral disorders, unspecified knee | Yes |
| M22..3 | Other derangements of patella | No |
| M22..3X | Other derangements of patella | No |
| M22..3X1 | Other derangements of patella, right knee | Yes |
| M22..3X2 | Other derangements of patella, left knee | Yes |
| M22..3X9 | Other derangements of patella, unspecified knee | Yes |
| M22..4 | Chondromalacia patellae | No |
| M22..40 | Chondromalacia patellae, unspecified knee | Yes |
| M22..41 | Chondromalacia patellae, right knee | Yes |
| M22..42 | Chondromalacia patellae, left knee | Yes |
| M22..8 | Other disorders of patella | No |
| M22..8X | Other disorders of patella | No |
| M22..8X1 | Other disorders of patella, right knee | Yes |
| M22..8X2 | Other disorders of patella, left knee | Yes |
| M22..8X9 | Other disorders of patella, unspecified knee | Yes |
| M22..9 | Unspecified disorder of patella | No |
| M22..90 | Unspecified disorder of patella, unspecified knee | Yes |
| M22..91 | Unspecified disorder of patella, right knee | Yes |
| M22..92 | Unspecified disorder of patella, left knee | Yes |
Last reviewed: September 2026