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M24.2

⚠ Non-billable (Header)

Disorder of ligament

Diseases of the musculoskeletal system and connective tissue (M00-M99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Instability secondary to old ligament injuryLigamentous laxity NOS

❌ Excludes1

direct

These codes are mutually exclusive. Never code them together.

  • • familial ligamentous laxity (M35.7)

❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

M24
  • • current injury - see injury of joint by body region

⚠️ Excludes2

direct

Both codes can exist if both conditions are documented.

  • • internal derangement of knee (M23.5-M23.8X9)

⚠️ Excludes2

inherited

Rules inherited from parent codes.

M24
  • • ganglion (M67.4)
  • • snapping knee (M23.8-)
  • • temporomandibular joint disorders (M26.6-)

Child Codes (9)

M24.20Disorder of ligament, unspecified siteM24.21Disorder of ligament, shoulderM24.22Disorder of ligament, elbowM24.23Disorder of ligament, wristM24.24Disorder of ligament, handM24.25Disorder of ligament, hipM24.27Disorder of ligament, ankle and footM24.28Disorder of ligament, vertebraeM24.29Disorder of ligament, other specified site

Clinical Description

ICD-10-CM code M24.2 represents disorder of ligament. This code falls under the Diseases of the musculoskeletal system and connective tissue (M00-M99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 5-character code at the 4th level of specificity. There are 9 more specific child codes under M24.2. Coders should note that M24.2 has 2 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code M24.2?

ICD-10-CM code M24.2 is "Disorder of ligament". It belongs to the category: Diseases of the musculoskeletal system and connective tissue (M00-M99).

Is M24.2 a billable ICD-10 code?

No, M24.2 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with M24.2?

M24.2 has 2 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Can M24.2 be coded with other codes?

M24.2 has 4 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in M24

Other codes in the same category that may be relevant for differential coding:

M24.0Loose body in jointM24.1Other articular cartilage disordersM24.3Pathological dislocation of joint, not elsewhere classifiedM24.4Recurrent dislocation of jointM24.5Contracture of jointM24.6Ankylosis of jointM24.7Protrusio acetabuliM24.8Other specific joint derangements, not elsewhere classifiedM24.9Joint derangement, unspecified

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Code Information

CodeM24.2
BillableNo — Header code
ParentM24
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes12 rule(s)
Excludes24 note(s)
Child codes9

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)