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Home/Diagnosis/ICD-10 Coding for Ulnar Nerve Entrapment

ICD-10 Coding for Ulnar Nerve Entrapment

G56.21
G56.22
G56.20

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

Also Known as:
Cubital Tunnel Syndrome
Guyon's Canal Syndrome
Ulnar Neuropathy
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Key Information: ICD-10 Coding for Ulnar Nerve Entrapment

Essential facts and insights about ICD-10 Coding for Ulnar Nerve Entrapment

Use ICD-10 code G56.21 for lesion of ulnar nerve, right upper limb, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Lesion of ulnar nerve, right upper limb

Billable Code
G56.21
Billable

Diagnostic Criteria

  • • Sensory deficits in 4th/5th digits
  • • Electrodiagnostic confirmation with NCV slowing at elbow

Applicable To

  • • Cubital tunnel syndrome, right
  • • Guyon's canal syndrome, right

Important Notes

  • • Ensure documentation specifies laterality and site of entrapment.

Lesion of ulnar nerve, left upper limb

Billable Code
G56.22
Billable

Diagnostic Criteria

  • • Sensory deficits in 4th/5th digits
  • • Electrodiagnostic confirmation with NCV slowing at elbow

Applicable To

  • • Cubital tunnel syndrome, left
  • • Guyon's canal syndrome, left

Important Notes

  • • Ensure documentation specifies laterality and site of entrapment.

Lesion of ulnar nerve, unspecified upper limb

Billable Code
G56.20
Billable

Diagnostic Criteria

  • • Sensory deficits in 4th/5th digits
  • • Electrodiagnostic confirmation with NCV slowing

Applicable To

  • • Cubital tunnel syndrome, unspecified
  • • Guyon's canal syndrome, unspecified

Important Notes

  • • Avoid using unspecified codes when laterality is documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

G58.8

Other specified mononeuropathies

Use when the site of ulnar entrapment is unspecified.

Frequently Asked Questions

What is the ICD-10 code for ulnar nerve entrapment?

The ICD-10 codes for ulnar nerve entrapment are G56.21 for the right arm, G56.22 for the left arm, and G56.20 when laterality is unspecified.

How do you document ulnar nerve entrapment?

Documentation should include laterality, specific site of entrapment (elbow or wrist), symptoms, and electrodiagnostic test results.

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