Breakdown of surgically created AV fistula, sequela

This code signifies a long-term complication arising from the mechanical failure of an arteriovenous fistula (AVF) that was surgically created. This breakdown refers to issues such as thrombosis, stenosis, or other structural problems that impair the AVF's function, occurring after the initial healing phase. It indicates a persistent or late-onset problem with the fistula's integrity.

Use this code for patients presenting with chronic or residual issues related to a previously created AVF, where the mechanical failure is no longer an acute event but a lasting consequence. This includes situations where a patient is undergoing evaluation or treatment for a non-acute, established mechanical breakdown of their fistula. It is appropriate when the patient is seen for follow-up care or management of these long-term sequelae.

• Always assign this code as a secondary diagnosis, with a primary code indicating the specific nature of the sequela (e.g., thrombosis, stenosis).
• Ensure documentation clearly specifies the mechanical nature of the breakdown and that it is a sequela, not an acute complication.
• Do not use this code for acute or initial complications occurring during the immediate post-operative period.