2026 ICD-10-CM Diagnosis Code M24.80Other specific joint derangements of unspecified joint, not elsewhere classified

ICD-10-CM Codes›M00–M99›M20-M25›M24

ICD-10-CM M24.80
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M24.80 is a billable ICD-10-CM diagnosis code for other specific joint derangements of unspecified joint, not elsewhere classified. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified joint disorders.

Code Identity

ICD-10-CM Code
M24.80
Billable Status
Yes — Valid for Submission
Code Describes
Other specific joint derangements of unspecified joint, not elsewhere classified
Short Description
Oth specific joint derangements of unsp joint, NEC
Parent Code
M24.8
Other specific joint derangements, not elsewhere classified

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM20-M25Other joint disorders
CategoryM24Other specific joint derangements
This CodeM24.80Other specific joint derangements of unspecified joint, not elsewhere classified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Audible joint crepitus
  • Destruction of joint caused by hemiarthroplasty
  • Grinding sensation in joint
  • Intellectual disability, cardiac anomalies, short stature, joint laxity syndrome
  • Joint crepitus
  • Joint laxity
  • Locking of joint
  • Palpable joint crepitus
  • Total locking of joint
  • Transient locking 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.

    • Derangement
      • joint (internal)
        • specified type NEC

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

Clinical InformationClinical

  • Joint Laxity

    looseness or instability of a joint.

  • Spondyloepimetaphyseal Dysplasia with Joint Laxity Type 2|SEMDJL2

    a rare disorder caused by mutation in the kif22 gene. it is characterized by short stature, midface retrusion, progressive knee malalignment, generalized ligamentous laxity, and mild spinal deformity.

  • VISS Syndrome|Vascular Aneurysm, Immune Dysregulation, Skeletal Anomalies, and Skin and Joint Laxity Syndrome

    an autosomal recessive condition caused by mutation(s) in the ipo8 gene, encoding importin-8. it is a generalized connective tissue disorder resulting in skin laxity, vascular aneurysms, immune dysregulation, and skeletal anomalies.

Patient EducationClinical

Joint Disorders

Your joints are places where two or more bones come together. Your shoulders, elbows, hips, knees, and knuckles are all joints. Your spine has joints, too.

The full article covers:

  • What are joints?
  • What are joint disorders?
  • What diseases can affect the joints?
  • What types of joint disorders happen from sudden injuries?
  • What types of joint disorders happen from overuse?
  • How can I keep my joints healthy?

Read the full article at MedlinePlus

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

Convert M24.80 to ICD-9-CMHistory

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

ICD-9-CM
718.80 Jt derangmnt NEC-unsp jt
Approximate The match is approximate rather than exact.

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 M24.80Overview

Is M24.80 (Other specific joint derangements, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specific joint derangements of unspecified joint, not elsewhere classified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M24.80 group to?

When other specific joint derangements of unspecified joint, not elsewhere classified 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 M24.80?

Under the General Equivalence Mappings, other specific joint derangements of unspecified joint, not elsewhere classified converts to ICD-9-CM 718.80 (jt derangmnt NEC-unsp jt). The mapping is approximate, so confirm the match fits the documentation.

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.