Stenosis of coronary artery stent, subsequent encounter

This code indicates a narrowing or obstruction within a previously placed coronary artery stent. This stenosis is occurring during the healing or follow-up phase after the initial treatment, not during the initial acute event. It signifies a complication of the stent implantation that requires ongoing management.

Apply this code when a patient presents for follow-up care, diagnostic testing, or treatment related to a documented re-narrowing of a coronary artery stent. This includes situations where the patient is experiencing recurrent angina or other symptoms attributable to the stent stenosis, and the encounter is not for the initial treatment of the stenosis.

• Ensure documentation clearly states "stenosis of coronary artery stent" and specifies it's a subsequent encounter.
• Do not use this code for initial treatment of the stent stenosis; that would typically involve an initial encounter (A) or active treatment (D).
• Always sequence this code after the primary diagnosis for the underlying cardiac condition, if applicable.