MCMCB Pro
M87

M87Osteonecrosis

Non-billable headerICD-10-CM

M87 is a non-billable header ICD-10-CM code for osteonecrosis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • juvenile osteonecrosis (M91-M92)
  • osteochondropathies (M90-M93)

Use additional code

Add a secondary code to capture the detail described below.

  • code to identify major osseous defect, if applicable (M89.7-)

Includes

Conditions this code covers.

  • avascular necrosis of bone

Risk adjustment

M87 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead M87

6 child codes. Green means billable.

Questions about M87

Is M87 a billable ICD-10-CM code?
No. M87 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does M87 sit in the tabular list?
Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other osteopathies (M86-M90).
What cannot be coded together with M87?
M87 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.