Monteggia's fx unsp ulna, 7thH

This code describes a specific type of forearm fracture involving both the ulna and a dislocation of the radial head, where the skin is broken but the wound is relatively clean (Type I or II open fracture). The "H" indicates that the patient is in a later stage of healing, but the bone union is progressing slower than expected.

Use this code for patients presenting for follow-up care of an open Monteggia's fracture of an unspecified ulna, where the initial injury was an open fracture (Gustilo-Anderson Type I or II) and the fracture is now experiencing delayed healing. This applies when the patient is beyond the initial acute treatment phase but before full union has occurred.

• Ensure documentation specifies an open Monteggia's fracture and explicitly states delayed healing.
• Verify the Gustilo-Anderson classification (Type I or II) for the open fracture.
• Confirm the encounter is for subsequent care, not initial treatment or sequelae.