2026 ICD-10-CM Diagnosis Code M24.40Recurrent dislocation, unspecified joint

ICD-10-CM Codes›M00–M99›M20-M25›M24

ICD-10-CM M24.40
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M24.40 is a billable ICD-10-CM diagnosis code for recurrent dislocation, unspecified joint. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. Coders also document this condition as habitual subluxation of joint. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified joint disorders.

Code Identity

ICD-10-CM Code
M24.40
Billable Status
Yes — Valid for Submission
Code Describes
Recurrent dislocation, unspecified joint
Short Description
Recurrent dislocation, unspecified joint
Same as the full description in the CMS dataset.
Parent Code
M24.4
Recurrent dislocation of joint

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM20-M25Other joint disorders
CategoryM24Other specific joint derangements
This CodeM24.40Recurrent dislocation, unspecified joint

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Habitual subluxation of joint
  • Non-traumatic subluxation of joint
  • Persistent dislocation of joint
  • Recurrent dislocation of joint
  • Recurrent dislocation of multiple sites
  • Recurrent subluxation of joint

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dislocation(articular)
      • recurrent

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MUS007
Other specified joint disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Dislocations

Dislocations are joint injuries that force the ends of your bones out of position. The cause is often a fall or a blow, sometimes from playing a contact sport. You can dislocate your ankles, knees, shoulders, hips, elbows and jaw. You can also dislocate your finger and toe joints.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert M24.40 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
718.30 Recur dislocat-unspec
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M24.40Overview

Is M24.40 (Recurrent dislocation of joint) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report recurrent dislocation, unspecified joint on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M24.40 group to?

When recurrent dislocation, unspecified joint is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M24.40?

Under the General Equivalence Mappings, recurrent dislocation, unspecified joint converts to ICD-9-CM 718.30 (recur dislocat-unspec). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.