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M21.75

Non-billable

Unequal limb length (acquired), femur

M21.75 is the ICD-10-CM code for Unequal limb length (acquired), femur. It is a non-billable category code — use a more specific child code such as M21.751 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Parent
M21.7
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 M21.75?
M21.75 is the ICD-10-CM code for "Unequal limb length (acquired), femur". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M21.75 a billable code?
No — M21.75 is a non-billable header code. Use a more specific child code (such as M21.751) for billing.
What are the subcodes of M21.75?
M21.75 has 3 more specific child codes, including M21.751, M21.752, M21.759.

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

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