Slow transit constipation

This code identifies a specific type of chronic constipation characterized by abnormally slow movement of stool through the colon. It indicates a functional disorder of the large intestine where the transit time of fecal matter is significantly prolonged, leading to infrequent and difficult bowel movements.

Assign this code when documentation explicitly states "slow transit constipation" or provides clinical findings consistent with delayed colonic transit, such as prolonged colonic transit time studies. This diagnosis is typically made after other causes of constipation, including obstructive or secondary causes, have been ruled out.

• Differentiate from other forms of constipation (e.g., irritable bowel syndrome with constipation, unspecified constipation) which have distinct codes.
• Ensure documentation supports the "slow transit" etiology, often through motility studies or specialist assessment.
• Do not use for acute or temporary constipation; this code signifies a chronic condition.