Nondisp commnt fx shaft of ulna, unsp arm, 7thN

This code signifies a complex fracture of the ulna shaft where the bone is broken into multiple fragments but remains in its anatomical position. It specifically indicates an open fracture (bone exposed to the outside) of a severe nature (Type IIIA, IIIB, or IIIC) that has failed to heal properly, requiring ongoing treatment. This is for a subsequent encounter, meaning the patient is returning for care related to this non-healing fracture.

Use this code for a patient presenting for follow-up care, such as cast changes, wound care, or surgical planning, for a previously diagnosed nondisplaced comminuted open fracture of the ulna shaft. This is applicable when the fracture is documented as nonunion, indicating a failure of the bone to mend after the expected healing period. It should be assigned when the specific type of open fracture (IIIA, IIIB, or IIIC) is documented, but the laterality of the arm is not specified.

• Ensure documentation clearly states "nondisplaced," "comminuted," "shaft of ulna," and "nonunion."
• Verify that the encounter is "subsequent" and that the open fracture type (IIIA, IIIB, or IIIC) is specified.
• If laterality (right or left arm) is documented, a more specific code should be used instead of the "unspecified arm" option.