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ICD-10-CM 2027 diagnosis code

M87Osteonecrosis

Not billable — use a more specific code

M87 is a header code, so it can't be reported by itself. Choose one of the 6 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 M87

M87 is the ICD-10-CM diagnosis code for osteonecrosis. It belongs to block M86-M90 (other osteopathies) 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 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M87.0 (bone), M87.1 (due to drugs), M87.2 (due to previous trauma), M87.3 (osteonecrosis), M87.8 (osteonecrosis) and M87.9 (unspecified).

Don't report M87 together with the conditions in its Excludes1 note: juvenile osteonecrosis (M91-M92) and osteochondropathies (M90-M93).

Use an additional code to identify major osseous defect, if applicable (M89.7-).

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 M87

Coding notes

IncludesFurther defines the content of the category
  • avascular necrosis of bone
Excludes1Not coded here — never report together with this code
  • juvenile osteonecrosis (M91-M92)
  • osteochondropathies (M90-M93)
Use additional codeAdd a secondary code to fully describe the condition
  • code to identify major osseous defect, if applicable (M89.7-)

Notes that apply from higher levels

Instructions written at a parent level also apply to M87.

Broader instructions also apply from M86-M90 Other osteopathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M87

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 M87

Is M87 billable?

No. M87 is a header code. Report one of its more specific subcodes instead.