Abdominal rigidity, unspecified site

This code describes a generalized stiffness or tenseness of the abdominal wall muscles without a specified location. It indicates an involuntary contraction of the abdominal muscles, often a protective response to underlying inflammation or pain within the abdomen.

Use this code when documentation indicates "abdominal rigidity" without further specification of the quadrant or region. This is appropriate when the physician notes generalized abdominal guarding or stiffness but does not localize it to a specific area. It is often a presenting symptom requiring further investigation.

• Avoid using this code if the rigidity is localized; instead, seek a more specific code (e.g., R19.31-R19.37).
• This code is often a symptom code; always look for a definitive diagnosis for the underlying cause of the rigidity.
• Do not confuse with abdominal distension (R19.00-R19.09) or abdominal tenderness (R10.81-R10.84).