Pylorospasm, not elsewhere classified

This code represents an involuntary, sustained contraction of the pyloric sphincter, the muscular valve between the stomach and the small intestine, that is not due to a congenital anomaly, psychological factors, or other specified conditions. This spasm can impede the normal flow of food from the stomach into the duodenum, leading to symptoms such as nausea, vomiting, and abdominal pain.

Use this code when documentation clearly indicates a diagnosis of pylorospasm that is acquired and not attributed to congenital malformations or psychogenic origins. This diagnosis is typically made after ruling out other causes of gastric outlet obstruction or functional dyspepsia. Supporting documentation would include physician notes detailing symptoms, diagnostic findings (e.g., endoscopy showing pyloric spasm), and the exclusion of other etiologies.

• Carefully review documentation to differentiate acquired pylorospasm from congenital or infantile forms, which are coded to Q40.0.
• Ensure the physician has ruled out neurotic or psychogenic causes; if present, code to F45.8.
• This code should be assigned as a primary diagnosis when pylorospasm is the main reason for the encounter, or as a secondary diagnosis if it's a co-existing condition.