M21.75
Header — not billableUnequal limb length (acquired), femur
The ICD-10 code for unequal limb length (acquired), femur is M21.75.
M21.75 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M21.70Unequal limb length (acquired), unspecified site
- M21.72Unequal limb length (acquired), humerusnon-billable header
- M21.73Unequal limb length (acquired), ulna and radiusnon-billable header
- M21.76Unequal limb length (acquired), tibia and fibulanon-billable header
- M21.75Unequal limb length (acquired), femurnon-billable header