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Home/Diagnosis/ICD-10 Coding for Right Foot Drop

ICD-10 Coding for Right Foot Drop

M21.371
G57.3

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

Also Known as:
Foot Drop
Drop Foot
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Key Information: ICD-10 Coding for Right Foot Drop

Essential facts and insights about ICD-10 Coding for Right Foot Drop

Use ICD-10 code M21.371 for acquired right foot drop, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Acquired right foot drop

Billable Code
M21.371
Billable

Diagnostic Criteria

clinical:
  • • Weakness in dorsiflexion with no identified nerve injury
documentation:
  • • Documentation must specify 'right' and 'acquired'

Applicable To

  • • Right foot drop

Important Notes

  • • Ensure documentation specifies 'acquired' and 'right' to avoid unspecified coding.

Lesion of lateral popliteal nerve

Non-Billable
G57.3
Non-Billable

Diagnostic Criteria

clinical:
  • • EMG/NCS showing peroneal neuropathy
  • • Sensory loss in lateral calf and dorsal foot

Applicable To

  • • Peroneal nerve palsy

Important Notes

  • • Sequence G57.3 before M21.371 when peroneal nerve lesion is the cause.
Ancillary Codes

Additional codes that may be used with this diagnosis

R26.2

Difficulty in walking, not elsewhere classified

Use if gait disturbance is a focus of care.

Frequently Asked Questions

What is the ICD-10 code for right foot drop?

The ICD-10 code for right foot drop is M21.371. It is used for acquired cases without a specified neurological cause.

When should G57.3 be used instead of M21.371?

Use G57.3 when foot drop is due to a confirmed peroneal nerve lesion, as verified by EMG/NCS.

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