Splenomegaly, not elsewhere classified

This code signifies an enlarged spleen, a condition known as splenomegaly, when the underlying cause is not specified or cannot be classified to a more specific ICD-10-CM code. It indicates an abnormal increase in spleen size, which can be a symptom of various systemic diseases.

Use this code when documentation clearly states splenomegaly but does not identify the etiology, or when the etiology is known but no more specific code exists. This code is appropriate when the provider has diagnosed an enlarged spleen without further diagnostic workup or when the cause remains undetermined after investigation.

• Always attempt to code the underlying cause of splenomegaly first, if known and documented.
• Do not use this code if a more specific code for splenomegaly due to a known condition (e.g., infectious mononucleosis, portal hypertension) is available.
• Review documentation for terms like "enlarged spleen," "splenomegaly," or "palpable spleen" to support this diagnosis.