M24
Header — not billable
Other specific joint derangements
Other specific joint derangements
M24 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.
Billable codes in this category
Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.
M24.7
Protrusio acetabuli
M24.9 M24.7 identifies protrusio acetabuli, a structural deformity in which the acetabular floor is abnormally deep, causing the femoral head to migrate medially into or through the medial wall of the pelvis.
Joint derangement, unspecified
M24.9 reports a joint derangement where the specific type, joint, and laterality cannot be identified from available documentation — the catch-all when no more precise M24 subcategory applies.
Inclusion & exclusion notes
Excludes 1 (mutually exclusive — never code together)
- current injury - see injury of joint by body region
Excludes 2 (not included here, but may be coded together if both present)
- ganglion (M67.4)
- snapping knee (M23.8-)
- temporomandibular joint disorders (M26.6-)