Personal history of surgery to heart and great vessels, presenting hazards to health

This code indicates a patient's past surgical intervention on the heart or major blood vessels, which is now considered a potential risk factor for current or future health issues. This history is relevant for assessing overall patient risk and guiding treatment decisions.

Use this code when a patient has a documented history of cardiac or great vessel surgery (e.g., CABG, valve replacement, aneurysm repair) that is being considered in their current medical management. It is appropriate when the past surgery itself, or its potential long-term effects, presents a hazard to the patient's current health status.

• Always assign this code as a secondary diagnosis, as it represents a historical condition.
• Ensure the medical record clearly documents the specific cardiac or great vessel surgery and its relevance to the current encounter.
• Do not use this code for acute post-operative complications; instead, code the specific complication.