Poisoning by unsp agents aff the GI sys, undet, sequela

This code signifies a lasting health problem (sequela) resulting from an unknown substance that caused poisoning, with the primary impact observed in the digestive system. The original poisoning event's intent (accidental, intentional, etc.) could not be determined.

Apply this code when a patient presents with a chronic or residual condition directly attributable to a past poisoning incident involving an unidentified agent that predominantly affected their GI tract. This is appropriate when the initial poisoning event's circumstances remain unclear or undocumented.

• Only use the "S" (sequela) seventh character for conditions that are residual effects of a past poisoning.
• Ensure documentation clearly links the current GI-related sequela to a prior, unspecified poisoning event.
• Avoid this code if the specific agent or the intent of the poisoning is known; use more specific codes in those instances.