| Full description | Synovial hypertrophy, not elsewhere classified, unspecified ankle and foot |
| Billable | Yes |
| Chapter | Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99) |
| Section | Disorders of synovium and tendon (M65-M67) |
| Parent code | M67.27 — Synovial hypertrophy, NEC, ankle and foot |