M87 ICD-10-CM Code: Osteonecrosis
M87 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the musculoskeletal system and connective tissue (M00-M99) / Other osteopathies (M86-M90)
M87
Header CodeICD-10-CMOfficial ICD-10-CMCodebook guidanceOsteonecrosis
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialNo inclusion terms are included in this display for M87. Check the code and parent instructions in the Code Book.
Excludes 2
Official- arthropathic psoriasis (L40.5-)Inherited from M00-M99
- certain conditions originating in the perinatal period (P04-P96)Inherited from M00-M99
- certain infectious and parasitic diseases (A00-B99)Inherited from M00-M99
- compartment syndrome (traumatic) (T79.A-)Inherited from M00-M99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)Inherited from M00-M99
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Inherited from M00-M99
- endocrine, nutritional and metabolic diseases (E00-E88)Inherited from M00-M99
- injury, poisoning and certain other consequences of external causes (S00-T88)Inherited from M00-M99
- neoplasms (C00-D49)Inherited from M00-M99
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)Inherited from M00-M99
Related Codes
Includes
Official- avascular necrosis of bone
Excludes 1
Official- juvenile osteonecrosis (M91-M92)
- osteochondropathies (M90-M93)
- postprocedural osteopathies (M96.-)Inherited from M86-M90
Code First
OfficialNo Code First sequencing instructions are included in this display for M87. Check the code and parent instructions in the Code Book.
Use Additional
Official- code to identify major osseous defect, if applicable (M89.7-)
Code Also
OfficialNo Code Also instructions are included in this display for M87. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
- Code
- M87
- Description
- Osteonecrosis
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- No
- Payment year
- 2026
Coder workflow notes
Get the V28 mapping + MEAT cheat sheet
One printable reference: check representative V28 mappings and the documentation reminders your note needs. Free, no card.
Free PDF. No card. Unsubscribe anytime.
What This Code Means
M87 is the ICD-10-CM diagnosis code for osteonecrosis. M87 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering other osteopathies (m86-m90).
M87 is a non-billable category for osteonecrosis. Move through the official child-code path until the documented detail supports a reportable code.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for M87 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •M87 is a non-billable category for osteonecrosis. Move through the official child-code path until the documented detail supports a reportable code.
- •For this DOS, capture the provider's current assessment and the care action documented for osteonecrosis. Keep the checklist tied to the note.
- •Do not swap M87 with M87.9. The FY2026 tabular describes M87.9 as osteonecrosis, unspecified. Follow the documented detail.
- •Ask Buddy to show the official notes for M87 or compare its code path with M87.9.
Includes
- avascular necrosis of bone
Use Additional Code
- code to identify major osseous defect, if applicable (M89.7-)