Poisn by anticoag antag, vit K and oth coag, undet, sequela

This code signifies a long-term complication or residual effect resulting from an undetermined poisoning by anticoagulant antagonists, vitamin K, or other coagulant agents. This means the initial acute poisoning event has resolved, but the patient is now experiencing a chronic health issue directly attributable to that past exposure, and the intent of the poisoning (e.g., accidental, intentional self-harm) could not be determined.

Use this code when documenting a sequela, such as chronic coagulopathy, persistent bleeding disorders, or organ damage, that is definitively linked to a past poisoning by these specific substances. This applies when the original poisoning event's intent was never established. It should be assigned after the acute phase of the poisoning has passed.

• Always sequence this sequela code after the code for the specific manifestation of the sequela (e.g., a code for chronic anemia due to bleeding).
• Ensure documentation clearly links the current condition to a past poisoning by anticoagulant antagonists, vitamin K, or other coagulants, and explicitly states the undetermined intent.
• Do not use this code for acute poisoning events; it is exclusively for residual effects.