Other fracture of shaft of right ulna, sequela

This code indicates a long-term complication or late effect stemming from a previous fracture of the shaft of the right ulna, excluding specific types like Monteggia's or Galeazzi's. It signifies that the initial fracture has healed, but the patient is now experiencing residual issues directly attributable to that past injury.

Apply this code when documenting conditions such as chronic pain, malunion, nonunion, nerve damage, or restricted range of motion in the right forearm, explicitly linked to a previously sustained ulnar shaft fracture. This code is appropriate for encounters addressing the sequelae, not the initial acute injury or its immediate healing phase.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., M84.251A for malunion of right ulna).
• Ensure documentation clearly links the current condition to a past fracture of the right ulnar shaft.
• Verify that the "S" seventh character is appropriate, indicating a sequela, rather than an initial encounter (A), subsequent encounter (D), or other applicable character.