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ICD-10-CM 2027 diagnosis code

M15Polyosteoarthritis

Not billable — use a more specific code

M15 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M15

M15 is the ICD-10-CM diagnosis code for polyosteoarthritis. It belongs to block M15-M19 (osteoarthritis) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M15.0 ((osteo)arthritis), M15.1 (arthropathy)), M15.2 (arthropathy)), M15.3 (arthritis), M15.4 ((osteo)arthritis), M15.8 (polyosteoarthritis) and M15.9 (unspecified).

Don't report M15 together with the conditions in its Excludes1 note: bilateral involvement of single joint (M16-M19).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under M15

Coding notes

IncludesFurther defines the content of the category
  • arthritis of multiple sites
Excludes1Not coded here — never report together with this code
  • bilateral involvement of single joint (M16-M19)

Notes that apply from higher levels

Instructions written at a parent level also apply to M15.

Broader instructions also apply from M15-M19 Osteoarthritis and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M15

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M15

Is M15 billable?

No. M15 is a header code. Report one of its more specific subcodes instead.