Other secondary kyphosis, cervicothoracic region

This code signifies an abnormal, exaggerated posterior curvature of the spine (kyphosis) in the cervicothoracic region, which is not congenital and is a consequence of another underlying condition. It indicates a secondary deformity affecting the neck and upper back, distinct from postural or congenital kyphosis.

Use this code when documentation specifies kyphosis in the cervicothoracic region that is explicitly stated as secondary to another condition, such as vertebral fracture, infection, or metabolic bone disease. The physician's notes should clearly identify the kyphosis as acquired and localized to the C7-T1/T2 area.

• Ensure the documentation specifies "secondary" kyphosis and the affected spinal region as "cervicothoracic."
• Always code the underlying condition causing the secondary kyphosis first, if known and applicable.
• Differentiate from M40.0- (postural kyphosis) and M40.2- (other kyphosis, unspecified).