Poisn by oth antacids and anti-gstrc-sec drugs, undet, subs

This code signifies a patient presenting for follow-up care or recovery from a poisoning event involving antacids or other medications that reduce stomach acid, where the intent of the poisoning (accidental, intentional self-harm, assault) could not be determined. The patient is no longer in the acute phase of the poisoning but is still receiving care related to its effects.

Apply this code when documenting subsequent encounters for patients recovering from an antacid or anti-gastric-secretion drug poisoning of undetermined intent. This includes visits for monitoring organ function, managing lingering symptoms, or addressing complications that arise after the initial acute treatment.

• Always assign an additional code for the specific adverse effect or manifestation of the poisoning.
• Ensure the documentation clearly supports the "undetermined" intent and the "subsequent encounter" status.
• Do not use this code for initial acute care of the poisoning; refer to the appropriate initial encounter code.