Acquired absence of right knee

This code signifies the absence of the right knee joint due to a condition or event occurring after birth. This typically results from amputation or surgical removal of the knee, rather than a congenital anomaly. Patients with this condition will have a prosthetic limb or will be using assistive devices.

Apply this code for patients who have undergone an amputation or disarticulation of the right knee. It is appropriate for documenting the long-term sequelae of trauma, disease (e.g., severe infection, tumor), or other medical necessity leading to the removal of the right knee. This code should be used for the residual limb status.

• Ensure documentation clearly specifies the right knee and confirms an acquired absence.
• Do not use this code for congenital absence of the knee; refer to Q-codes for congenital malformations.
• Code any associated complications of the amputation (e.g., phantom limb pain, infection) separately.