Open bite of abd wall, unsp q w penet perit cav, sequela

This code signifies a healed injury to the abdominal wall resulting from an open bite, where the bite wound extended into the peritoneal cavity. The specific quadrant of the abdomen affected by the bite is not documented. This code is used to indicate a long-term effect or complication of the initial injury.

This code is appropriate for documenting the sequela of a past open bite injury to the abdomen that involved penetration of the peritoneum, when the specific abdominal quadrant is unknown. It would be used in follow-up encounters for patients experiencing ongoing issues directly related to the original injury, such as chronic pain, adhesions, or scar tissue formation.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly states the injury was an "open bite" and involved "penetration into the peritoneal cavity."
• If the specific abdominal quadrant is known, a more precise code from the S31.65- category should be used instead.