2026 ICD-10-CM Diagnosis Code M12.59Traumatic arthropathy, multiple sites

ICD-10-CM Codes›M00–M99›M05-M14›M12

ICD-10-CM M12.59
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M12.59 is a billable ICD-10-CM diagnosis code for traumatic arthropathy, multiple sites. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 553 through 554. Coders also document this condition as traumatic arthropathy of multiple sites. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Traumatic arthropathy.

Code Identity

ICD-10-CM Code
M12.59
Billable Status
Yes — Valid for Submission
Code Describes
Traumatic arthropathy, multiple sites
Short Description
Traumatic arthropathy, multiple sites
Same as the full description in the CMS dataset.
Parent Code
M12.5
Traumatic arthropathy

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM05-M14Inflammatory polyarthropathies
CategoryM12Other and unspecified arthropathy
This CodeM12.59Traumatic arthropathy, multiple sites

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Traumatic arthropathy of multiple sites

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.

    • Arthropathy
      • traumatic
        • multiple site

Clinical ClassificationClinical

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

CCSR MUS031
Traumatic arthropathy
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Traumatic Arthropathy

    any arthropathy that is caused by trauma.

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 M12.59 to ICD-9-CMHistory

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

ICD-9-CM
716.19 Traum arthropathy-mult
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 M12.59Overview

Is M12.59 (Traumatic arthropathy) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report traumatic arthropathy, multiple sites on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M12.59 group to?

When traumatic arthropathy, multiple sites is the principal diagnosis on an inpatient stay, it groups to MS-DRG 553, 554, with relative weights from 0.8301 to 1.2963 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M12.59?

Under the General Equivalence Mappings, traumatic arthropathy, multiple sites converts to ICD-9-CM 716.19 (traum arthropathy-mult). 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.