| Full description | Osteonecrosis in diseases classified elsewhere, left ankle and foot |
| Billable | Yes |
| Chapter | Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99) |
| Section | Other osteopathies (M86-M90) |
| Parent code | M90.57 — Osteonecrosis in diseases classd elswhr, ankle and foot |