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Home/Diagnosis/ICD-10 Coding for Flat Feet

ICD-10 Coding for Flat Feet

M21.41
M21.42
Q66.50

Complete ICD-10-CM coding and documentation guide for icd-10 coding for flat feet includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Pes Planus
Fallen Arches
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Key Information: ICD-10 Coding for Flat Feet

Essential facts and insights about ICD-10 Coding for Flat Feet

Use ICD-10 code M21.41 for acquired flat foot, right foot, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Acquired flat foot, right foot

Billable Code
M21.41
Billable

Diagnostic Criteria

  • • Presence of unilateral arch collapse with acquired cause.

Applicable To

  • • Unilateral arch collapse
  • • Acquired cause (e.g., PTT dysfunction, trauma, arthritis)

Important Notes

  • • Ensure documentation specifies acquired nature and laterality.

Acquired flat foot, left foot

Billable Code
M21.42
Billable

Applicable To

  • • Unilateral arch collapse
  • • Acquired cause (e.g., PTT dysfunction, trauma, arthritis)

Important Notes

  • • Ensure documentation specifies acquired nature and laterality.

Congenital pes planus, unspecified foot

Billable Code
Q66.50
Billable

Applicable To

  • • Pediatric patient
  • • No trauma history
  • • Bilateral involvement

Important Notes

  • • Ensure documentation specifies congenital nature.
Ancillary Codes

Additional codes that may be used with this diagnosis

M76.82

Posterior tibial tendon dysfunction

Use to specify the cause of acquired flat foot.

Frequently Asked Questions

What is the ICD-10 code for flat feet?

The ICD-10 code for acquired flat feet is M21.4-, with specific codes for laterality: M21.41 for the right foot and M21.42 for the left foot. Congenital flat feet are coded under Q66.5-.

How do you code acquired flat feet?

Acquired flat feet are coded using M21.41 for the right foot and M21.42 for the left foot, with documentation of the cause and laterality.

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