M66.87
⚠ Non-billable
Spontaneous rupture of other tendons, ankle and foot
ICD-10-CM · FY2026 · Diseases of the Musculoskeletal System and Connective Tissue
Code
M66.87
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 M66.87?
ICD-10-CM code M66.87 represents Spontaneous rupture of other tendons, ankle and foot. 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 M66.87 billable?
No. M66.87 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is M66.87 in?
M66.87 belongs to the Diseases of the Musculoskeletal System and Connective Tissue chapter (M00–M99) of ICD-10-CM.
Related codes in the M66 category
M66
Spontaneous rupture of synovium and tendon
Non-billable
M66.0
Rupture of popliteal cyst
Billable
M66.1
Rupture of synovium
Non-billable
M66.2
Spontaneous rupture of extensor tendons
Non-billable
M66.3
Spontaneous rupture of flexor tendons
Non-billable
M66.8
Spontaneous rupture of other tendons
Non-billable
M66.9
Spontaneous rupture of unspecified tendon
Billable
M66.10
Rupture of synovium, unspecified joint
Billable
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