Oth shellfish poisoning, intentional self-harm, init encntr

This code signifies a patient presenting with symptoms of poisoning specifically caused by consuming shellfish other than those explicitly classified, where the ingestion was a deliberate act of self-harm. The "initial encounter" indicates this is the first time the patient is receiving active treatment for this specific poisoning episode.

Apply this code when documentation clearly states a patient intentionally ingested a non-specified shellfish with the intent to cause self-harm, and they are currently undergoing initial treatment for the resulting toxic effects. This would include scenarios such as a suicide attempt involving mussels, clams, or oysters not otherwise specified, where the patient is in the emergency department or inpatient setting for acute management.

• Always verify the intent of self-harm is clearly documented by the provider.
• Ensure the specific type of shellfish is not one with its own dedicated poisoning code (e.g., ciguatera).
• Remember the "A" suffix denotes an initial encounter for this specific poisoning event.