Spasm of sphincter of Oddi

This code represents a painful, intermittent obstruction of bile and pancreatic juice flow due to involuntary contraction of the muscular valve controlling the opening of the bile and pancreatic ducts into the duodenum. This spasm can lead to biliary colic, pancreatitis, or elevated liver enzymes.

Assign this code when documentation clearly indicates a diagnosis of sphincter of Oddi dysfunction (SOD) characterized by spasmodic contractions. This diagnosis is often made after excluding other causes of abdominal pain and biliary obstruction, and may be supported by manometry findings or clinical response to antispasmodics.

• Ensure documentation specifies "spasm" or "dysfunction" of the sphincter of Oddi, rather than just general abdominal pain.
• Differentiate from other causes of biliary obstruction, such as choledocholithiasis (K80.50-K80.52).
• Consider sequencing this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis if it's a co-morbidity contributing to the patient's overall condition.