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M20

Non-billable

Acquired deformities of fingers and toes

M20 is the ICD-10-CM code for Acquired deformities of fingers and toes. It is a non-billable category code — use a more specific child code such as M20.0 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Subcodes
7
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

Excludes1 — not coded here

  • •acquired absence of fingers and toes (Z89.-)
  • •congenital absence of fingers and toes (Q71.3-, Q72.3-)
  • •congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-)

Frequently asked questions

What is ICD-10 code M20?
M20 is the ICD-10-CM code for "Acquired deformities of fingers and toes". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M20 a billable code?
No — M20 is a non-billable header code. Use a more specific child code (such as M20.0) for billing.
What are the subcodes of M20?
M20 has 7 more specific child codes, including M20.0, M20.1, M20.2.
What is excluded from M20?
Excludes1 (not coded here): acquired absence of fingers and toes (Z89.-); congenital absence of fingers and toes (Q71.3-, Q72.3-); congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-).

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

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