M65.4

Approximate Synonyms

• Radial styloid tenosynovitis

• Tendonitis, dequervains

• Tenosynovitis of bilateral radial styloid

• Tenosynovitis of left radial styloid

• Tenosynovitis of radial styloid

• Tenosynovitis of right radial styloid

Clinical Information

• Stenosing tenosynovitis of the abductor pollicis longus and extensor pollicis brevis tendons in the first dorsal wrist compartment. The presenting symptoms are usually pain and tenderness at the radial styloid. The cause is almost always related to overuse injury or is associated with rheumatoid arthritis.

Details

• M65.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM M65.4 became effective on October 1, 2022.

• This is the American ICD-10-CM version of M65.4 – other international versions of ICD-10 M65.4 may differ.