Endometriosis of the pericardial space

This code represents the presence of endometrial-like tissue abnormally located within the pericardial space, the sac surrounding the heart. This ectopic tissue can cause inflammation, adhesions, and effusions, leading to cardiac symptoms.

Use this code when documentation explicitly states endometriosis affecting the pericardium. This diagnosis is typically confirmed through imaging studies (e.g., MRI, CT) or direct visualization during surgical exploration, often in patients with a known history of endometriosis elsewhere.

• Ensure documentation clearly specifies the pericardial space as the site of endometriosis, not just general thoracic involvement.
• Code any associated cardiac manifestations or complications (e.g., pericardial effusion, pericarditis) separately.
• Do not confuse with other forms of thoracic endometriosis, such as pleural or diaphragmatic, which have different codes.