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2025 ICD-10-CM code M85.62

Other cyst of bone, upper arm. This condition is characterized by a fluid-filled cavity within the bone of the upper arm, which can weaken the bone and potentially lead to fractures.

If a fracture is present due to the bone cyst, both the fracture code and M85.62 should be reported. External cause codes should be used to indicate the cause of the fracture, if applicable.

Medical necessity for diagnostic testing and treatment is established by the presence of symptoms, such as pain, swelling, or limited range of motion, or by the presence of a fracture. The documentation should support the need for intervention.

Providers diagnose this condition based on medical history, physical examination, and imaging studies such as X-rays, CT scans, and MRIs. A biopsy may also be performed. Treatment options include surgery to remove the cyst and management of any resulting fractures.

In simple words: A bone cyst in your upper arm is a fluid-filled sac that develops within the bone. This can weaken the bone, making it more prone to breaks. You might experience pain, limited movement, and other symptoms like skin discoloration or an unusual bend in your arm.

A cyst other than a solitary bone cyst or an aneurysmal bone cyst is present in the upper arm bone. These cysts may cause pain, weakness in the bone, and increase the risk of fractures. Other symptoms may include restricted motion, skin discoloration around the affected area, unusual bending of the arm, or difficulty bearing weight.

Example 1: A 45-year-old patient presents with persistent pain and swelling in their upper arm. Imaging reveals a fluid-filled cyst within the humerus, consistent with a diagnosis of M85.62., A 10-year-old child sustains a fracture in their upper arm after a minor fall. Subsequent imaging reveals a previously undetected bone cyst, contributing to the fracture. This is coded as M85.62 along with the appropriate fracture code., During a routine physical exam, a patient reports occasional discomfort in their upper arm. Imaging studies are ordered and reveal a small, asymptomatic bone cyst, which is diagnosed as M85.62.

Documentation should include details of the patient's symptoms, physical examination findings, imaging results (X-ray, CT, MRI), and biopsy results if performed. The location of the cyst in the upper arm should be specified.

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