Ganglion, unspecified shoulder

This code describes a ganglion cyst located in an unspecified shoulder. A ganglion is a non-cancerous, fluid-filled sac that typically forms on tendons or joints, often presenting as a palpable lump. In this context, it refers specifically to such a cyst affecting the shoulder joint or surrounding tendons, without further specification of laterality.

Use this code when documentation clearly identifies a ganglion cyst of the shoulder, but the medical record does not specify whether it is the right or left shoulder. This code is appropriate when the physician's diagnosis explicitly states "ganglion of shoulder" without laterality, or if laterality cannot be determined from the available clinical notes.

• Avoid using this code if laterality (right or left shoulder) is documented; instead, choose the more specific M67.411 or M67.412.
• Ensure the documentation confirms the lesion is a ganglion cyst and not another type of soft tissue mass.
• This code is for the diagnosis of the ganglion itself, not for any associated pain or functional limitations, which would be coded separately.