Generalized abdominal rigidity

This code signifies a widespread stiffening or hardening of the abdominal wall muscles, often indicative of a serious underlying intra-abdominal process. It represents a physical exam finding rather than a specific diagnosis, suggesting peritoneal irritation or inflammation. This rigidity is typically involuntary and persistent.

Assign this code when documentation explicitly states "generalized abdominal rigidity" or "diffuse abdominal guarding." It is commonly seen in acute abdominal conditions such as peritonitis, ruptured appendix, or perforated viscus. The physician's physical examination findings are the primary documentation source.

• Do not use this code as a primary diagnosis if a more specific underlying cause for the rigidity is identified and documented.
• Differentiate from localized abdominal rigidity or guarding, which would require a different code (e.g., R19.31-R19.36).
• Always sequence this code after the definitive diagnosis, if known, as it describes a symptom or sign.