Elevated erythrocyte sedimentation rate

This code indicates an abnormally high erythrocyte sedimentation rate (ESR), a non-specific laboratory finding that suggests the presence of inflammation, infection, or tissue necrosis within the body. It reflects how quickly red blood cells settle in a test tube, with faster settling indicating increased levels of acute phase proteins. An elevated ESR is a marker of an underlying disease process rather than a disease itself.

Use this code when medical record documentation explicitly states an elevated ESR without a more specific diagnosis explaining the elevation. This often occurs when the ESR is ordered as part of a diagnostic workup for symptoms like fever of unknown origin, unexplained pain, or suspected autoimmune conditions, and the underlying cause is not yet determined or definitively diagnosed.

• Do not code an elevated ESR if a definitive diagnosis explaining the elevation (e.g., rheumatoid arthritis, osteomyelitis) is documented. Code the definitive diagnosis instead.
• This code is typically a secondary diagnosis, as it represents a symptom or abnormal lab finding rather than a primary condition.
• Ensure the documentation clearly states "elevated" or "high" ESR, along with the actual lab value if available, to support the code.