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M20.01

Non-billable

Mallet finger

M20.01 is the ICD-10-CM code for Mallet finger. It is a non-billable category code — use a more specific child code such as M20.011 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M20.0
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 M20.01?
M20.01 is the ICD-10-CM code for "Mallet finger". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M20.01 a billable code?
No — M20.01 is a non-billable header code. Use a more specific child code (such as M20.011) for billing.
What are the subcodes of M20.01?
M20.01 has 3 more specific child codes, including M20.011, M20.012, M20.019.

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

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