Toxic effect of contact w oth venomous fish, undet, subs

This code describes the delayed or follow-up care for a patient who experienced a toxic reaction from contact with an unspecified venomous fish, where the intent (accidental, intentional self-harm, assault, or undetermined) of the exposure is not documented. It indicates that the initial treatment for the acute effects has concluded, and the patient is now receiving ongoing management for residual symptoms or complications.

Use this code for subsequent encounters when a patient presents for follow-up care related to a venomous fish sting or envenomation, and the specific type of venomous fish is not known or documented. This includes situations where the patient is being monitored for persistent pain, swelling, infection, or other complications after the initial treatment.

• Requires a seventh character "D" for subsequent encounter, indicating ongoing care.
• Do not use for initial encounters; refer to codes with "A" for initial encounter.
• Ensure documentation clearly states "undetermined" intent if known, otherwise, consider other intent options if specified.