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M21.27

Non-billable

Flexion deformity, ankle and toes

M21.27 is the ICD-10-CM code for Flexion deformity, ankle and toes. It is a non-billable category code — use a more specific child code such as M21.271 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M21.2
Subcodes
3
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 M21.27?
M21.27 is the ICD-10-CM code for "Flexion deformity, ankle and toes". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M21.27 a billable code?
No — M21.27 is a non-billable header code. Use a more specific child code (such as M21.271) for billing.
What are the subcodes of M21.27?
M21.27 has 3 more specific child codes, including M21.271, M21.272, M21.279.

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

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