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Home/Diagnosis/ICD-10 Coding for Ulnar Neuropathy

ICD-10 Coding for Ulnar Neuropathy

G56.21
G56.22
G56.23

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

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

Essential facts and insights about ICD-10 Coding for Ulnar Neuropathy

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

  • • Numbness/tingling in right 4th and 5th digits
  • • Positive Tinel's sign at right elbow
  • • EDS showing conduction velocity <50 m/s across right elbow

Applicable To

  • • Right ulnar nerve entrapment
  • • Right cubital tunnel syndrome

Important Notes

  • • Ensure laterality is documented to avoid unspecified coding.

Lesion of ulnar nerve, left upper limb

Billable Code
G56.22
Billable

Diagnostic Criteria

  • • Numbness/tingling in left 4th and 5th digits
  • • Positive Tinel's sign at left elbow
  • • EDS showing conduction velocity <50 m/s across left elbow

Applicable To

  • • Left ulnar nerve entrapment
  • • Left cubital tunnel syndrome

Important Notes

  • • Ensure laterality is documented to avoid unspecified coding.

Lesion of ulnar nerve, bilateral upper limbs

Billable Code
G56.23
Billable

Diagnostic Criteria

  • • Numbness/tingling in both 4th and 5th digits
  • • Positive Tinel's sign at both elbows
  • • EDS showing conduction velocity <50 m/s across both elbows

Applicable To

  • • Bilateral ulnar nerve entrapment
  • • Bilateral cubital tunnel syndrome

Important Notes

  • • Ensure bilateral involvement is documented to avoid unspecified coding.
Ancillary Codes

Additional codes that may be used with this diagnosis

E11.42

Type 2 diabetes mellitus with diabetic polyneuropathy

Use when ulnar neuropathy is related to diabetic neuropathy.

Frequently Asked Questions

What is the ICD-10 code for ulnar neuropathy?

The ICD-10 codes for ulnar neuropathy are G56.21 for the right upper limb, G56.22 for the left upper limb, and G56.23 for bilateral upper limbs.

How do you code bilateral ulnar neuropathy?

For bilateral ulnar neuropathy, use ICD-10 code G56.23, which specifies lesions of the ulnar nerve in both upper limbs.

When should E11.42 be used with ulnar neuropathy?

Use E11.42 when ulnar neuropathy is associated with diabetic polyneuropathy, indicating a causal relationship with diabetes.

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