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M66.17

Non-billable

Rupture of synovium, ankle, foot and toes

M66.17 is the ICD-10-CM code for Rupture of synovium, ankle, foot and toes. It is a non-billable category code — use a more specific child code such as M66.171 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M66.1
Subcodes
9
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code M66.17?
M66.17 is the ICD-10-CM code for "Rupture of synovium, ankle, foot and toes". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M66.17 a billable code?
No — M66.17 is a non-billable header code. Use a more specific child code (such as M66.171) for billing.
What are the subcodes of M66.17?
M66.17 has 9 more specific child codes, including M66.171, M66.172, M66.173.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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