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M21.3

Non-billable

Wrist or foot drop (acquired)

M21.3 is the ICD-10-CM code for Wrist or foot drop (acquired). It is a non-billable category code — use a more specific child code such as M21.33 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M21
Subcodes
2
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 M21.3?
M21.3 is the ICD-10-CM code for "Wrist or foot drop (acquired)". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M21.3 a billable code?
No — M21.3 is a non-billable header code. Use a more specific child code (such as M21.33) for billing.
What are the subcodes of M21.3?
M21.3 has 2 more specific child codes, including M21.33, M21.37.

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

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