M20-M25: Other joint disorders
ICD-10-CM 2027 block M20-M25 in chapter 13 (Diseases of the musculoskeletal system and connective tissue) has 6 categories.
- M20 – Acquired deformities of fingers and toes 33 billable codes
- M21 – Other acquired deformities of limbs 124 billable codes
- M22 – Disorder of patella 21 billable codes
- M23 – Internal derangement of knee 111 billable codes
- M24 – Other specific joint derangements 205 billable codes
- M25 – Other joint disorder, not elsewhere classified 225 billable codes