M87 – Osteonecrosis
ICD-10-CM 2027 diagnosis code · Other osteopathies
ICD-10-CM code
M87
- Code
M87(claims format:M87)- Description
- Osteonecrosis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M86-M90 Other osteopathies
Billable codes under M87
M87 is a header code and cannot be used on claims. Choose the most specific code:
- M87.0 – Idiopathic aseptic necrosis of boneHeader (more codes below)
- M87.1 – Osteonecrosis due to drugsHeader (more codes below)
- M87.2 – Osteonecrosis due to previous traumaHeader (more codes below)
- M87.3 – Other secondary osteonecrosisHeader (more codes below)
- M87.8 – Other osteonecrosisHeader (more codes below)
- M87.9 – Osteonecrosis, unspecifiedBillable
Notes for M87
Includes:
- avascular necrosis of bone
Use additional code:
- code to identify major osseous defect, if applicable (M89.7-)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block M86-M90
Excludes1 (not coded here):
- postprocedural osteopathies (M96.-)
Frequently asked questions
What is ICD-10 code M87?
M87 is the ICD-10-CM code for osteonecrosis, in the block M86-M90 (Other osteopathies).
Is M87 a billable code?
No. M87 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.