M90.55
⚠ Non-billable
Osteonecrosis in diseases classified elsewhere, thigh
ICD-10-CM · FY2026 · Diseases of the Musculoskeletal System and Connective Tissue
Code
M90.55
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Musculoskeletal System and Connective Tissue
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code M90.55?
ICD-10-CM code M90.55 represents Osteonecrosis in diseases classified elsewhere, thigh. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Musculoskeletal System and Connective Tissue chapter, effective October 1, 2025 – September 30, 2026.
Is M90.55 billable?
No. M90.55 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is M90.55 in?
M90.55 belongs to the Diseases of the Musculoskeletal System and Connective Tissue chapter (M00–M99) of ICD-10-CM.
Related codes in the M90 category
M90
Osteopathies in diseases classified elsewhere
Non-billable
M90.5
Osteonecrosis in diseases classified elsewhere
Non-billable
M90.6
Osteitis deformans in neoplastic diseases
Non-billable
M90.8
Osteopathy in diseases classified elsewhere
Non-billable
M90.50
Osteonecrosis in diseases classified elsewhere, unspecified site
Billable
M90.51
Osteonecrosis in diseases classified elsewhere, shoulder
Non-billable
M90.52
Osteonecrosis in diseases classified elsewhere, upper arm
Non-billable
M90.53
Osteonecrosis in diseases classified elsewhere, forearm
Non-billable
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