2026 ICD-10-CM Diagnosis Code M24.212Disorder of ligament, left shoulder

ICD-10-CM Codes›M00–M99›M20-M25›M24

ICD-10-CM M24.212
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M24.212 is a billable ICD-10-CM diagnosis code for disorder of ligament, left shoulder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 557 through 558. Coders also document this condition as disorder of ligament of joint of bilateral shoulder regions. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified joint disorders.

Code Identity

ICD-10-CM Code
M24.212
Billable Status
Yes — Valid for Submission
Code Describes
Disorder of ligament, left shoulder
Short Description
Disorder of ligament, left shoulder
Same as the full description in the CMS dataset.
Parent Code
M24.21
Disorder of ligament, shoulder

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM20-M25Other joint disorders
CategoryM24Other specific joint derangements
This CodeM24.212Disorder of ligament, left shoulder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of ligament of joint of bilateral shoulder regions
  • Disorder of ligament of left shoulder joint
  • Disorder of ligament of left shoulder region
  • Disorder of ligament of right shoulder region

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

Shoulder Injuries and Disorders

Your shoulder joint is composed of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone). Your shoulders are the most movable joints in your body. They can also be unstable because the ball of the upper arm is larger than the shoulder socket that holds it.

Read the full article at MedlinePlus

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

Convert M24.212 to ICD-9-CMHistory

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

ICD-9-CM
728.4 Laxity of ligament
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 M24.212Overview

Is M24.212 (Disorder of ligament, shoulder) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disorder of ligament, left shoulder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M24.212 group to?

When disorder of ligament, left shoulder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 557, 558, with relative weights from 0.8932 to 1.4869 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M24.212?

Under the General Equivalence Mappings, disorder of ligament, left shoulder converts to ICD-9-CM 728.4 (laxity of ligament). 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.