Elevated carcinoembryonic antigen [CEA]

This code indicates an abnormal laboratory finding of an increased level of carcinoembryonic antigen (CEA) in a patient's blood. CEA is a tumor marker that can be elevated in various cancers, particularly colorectal cancer, but also in non-malignant conditions. It signifies an abnormal test result requiring further investigation.

Use this code when documentation explicitly states an elevated CEA level, without a definitive diagnosis of cancer or other specific conditions causing the elevation. This is often seen when a patient presents for follow-up of an abnormal lab result or during cancer screening where the results are inconclusive.

• Do not code this if a definitive diagnosis explaining the elevated CEA (e.g., colorectal cancer) is established; instead, code the definitive diagnosis.
• This code is typically used as a secondary diagnosis when the primary reason for the encounter is to investigate the elevated CEA.
• Ensure the medical record clearly documents the specific CEA level and the context of the abnormal finding.