Excision of synostosis

Created Feb 2012
Reviewed Dec 2019


What ACHI code would be assigned for excision of radioulnar synostosis?

Patient had previously sustained a complex elbow fracture dislocation, which was treated with reconstruction (ligament repair and radial head fixation).  Patient presents with the diagnosis of ‘post traumatic radioulnar synostosis elbow’.  The synostosis was excised.


The procedure was described as ‘excision of accessory ossification from the radius and ulna’, and so the codes to assign are 48406-03 [1426] Ostectomy of radius and 48406-05 [1426] Ostectomy of ulna.

Note that the documented accessory ossification is not the same thing as an accessory bone.

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