2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M24.40 is a billable ICD-10-CM diagnosis code for recurrent dislocation, unspecified joint. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566. Coders also document this condition as habitual dislocation 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 dislocation of joint
  • 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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M24.40: its own notes plus those printed at M24.4, M24, block M00-M25, block M20-M25, and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block M00-M25 applies to 2,249 codes
  • Disorders affecting predominantly peripheral (limb) joints

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From M24 Other specific joint derangements applies to 205 codes
  • current injury - see injury of joint by body region

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From M24.4 Recurrent dislocation of joint applies to 32 codes
From M24 Other specific joint derangements applies to 205 codes
From Block M20-M25 Other joint disorders applies to 719 codes
From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

General instructions on how these codes are used.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name M24.40, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming M24.40: they are not reported together with it, unless the two conditions are unrelated.

  • M24.3 Pathological dislocation of joint, not elsewhere classified
    recurrent dislocation of joint (M24.4-) names M24.4-, which includes this code

Excludes2 1

These codes carry an Excludes2 note naming M24.40: its condition is not part of those codes, and both may be reported when the patient has both.

  • M23 Internal derangement of knee
    recurrent dislocation or subluxation of joints (M24.4) names M24.4, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M24.40Overview

What is the ICD-10 code for recurrent dislocation, unspecified joint?

The ICD-10-CM code for recurrent dislocation, unspecified joint is M24.40 (sometimes written as M2440). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

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, 566, 565, with relative weights from 0.7374 to 1.4909 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.