2026 ICD-10-CM Diagnosis Code M15Polyosteoarthritis

ICD-10-CM Codes›M00–M99›M15-M19›M15

ICD-10-CM M15
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M15 is a non-billable ICD-10-CM category code for polyosteoarthritis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as M15.0, M15.1, M15.2, and M15.3.

Code Identity

ICD-10-CM Code
M15
Billable Status
No — Non-Billable Category
Code Describes
Polyosteoarthritis
Chapter
M15-M19
Osteoarthritis

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM15-M19Osteoarthritis
CategoryM15Polyosteoarthritis
This CodeM15Polyosteoarthritis

Specific Coding for PolyosteoarthritisOverview

Non-specific codes like M15 require more characters. Use one of these billable codes instead:

  • Use M15.0 for Primary generalized (osteo)arthritis

  • Use M15.1 for Heberden's nodes (with arthropathy)

  • Use M15.2 for Bouchard's nodes (with arthropathy)

  • Use M15.3 for Secondary multiple arthritis

  • Use M15.4 for Erosive (osteo)arthritis

  • Use M15.8 for Other polyosteoarthritis

  • Use M15.9 for Polyosteoarthritis, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • arthritis of multiple sites

Type 1 Excludes

  • bilateral involvement of single joint M16 M19

Patient EducationClinical

Osteoarthritis

Osteoarthritis, sometimes called OA, is a type of arthritis that only affects the joints, usually in the hands, knees, hips, neck, and lower back. It's the most common type of arthritis.

The full article covers:

  • What is osteoarthritis?
  • What are the symptoms of osteoarthritis?
  • What causes osteoarthritis?
  • Who is more likely to develop osteoarthritis?
  • How is osteoarthritis diagnosed?
  • What are the treatments for osteoarthritis?

Read the full article at MedlinePlus

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

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 M15Overview

Is M15 (Polyosteoarthritis) a billable code?

No. This is a category header that groups the codes for polyosteoarthritis, and headers cannot be submitted on claims. Claims for polyosteoarthritis need a more specific code from this category, such as M15.0, M15.1, and M15.2.