Megacolon, other than Hirschsprung's

This code identifies an abnormal, chronic dilation and hypertrophy of the colon that is not congenital in origin. It signifies a non-obstructive enlargement of the large intestine, often leading to severe constipation and fecal impaction.

Use this code for acquired forms of megacolon, such as those resulting from chronic constipation, neurological disorders, or medication side effects. Documentation should clearly state "acquired megacolon," "idiopathic megacolon," or specify a cause other than Hirschsprung's disease.

• Differentiate carefully from congenital megacolon (Hirschsprung's disease), which has a distinct code.
• Look for documentation specifying the cause of the megacolon if known, as additional codes may be necessary.
• Ensure the physician's documentation explicitly rules out Hirschsprung's disease when using this code.