Solitary bone cyst, unspecified hand

This code describes a benign, fluid-filled lesion within the bone of an unspecified hand. These cysts are typically asymptomatic and often discovered incidentally on imaging. They represent a localized area of bone resorption and fibrous tissue replacement.

Use this code when documentation specifies a solitary bone cyst located in the hand, without further detail regarding laterality (left or right). This diagnosis is typically supported by radiographic findings such as a well-defined, lytic lesion with sclerotic margins.

• Ensure documentation explicitly states "solitary bone cyst" and specifies the "hand" as the anatomical site.
• Avoid using this code if laterality (left or right hand) is documented; instead, select the more specific code.
• Do not confuse with other bone lesions such as enchondromas or giant cell tumors, which have distinct ICD-10-CM codes.