Toxic effect of venom of ants, assault, subsequent encounter

This code signifies a toxic reaction resulting from ant venom exposure that occurred as an intentional act of harm by another person. The "subsequent encounter" indicates that the patient is receiving follow-up care for the initial injury, such as wound care, monitoring for delayed reactions, or management of persistent symptoms.

Apply this code for patients presenting for ongoing treatment of symptoms or complications stemming from an ant venom exposure that was inflicted during an assault. This includes situations where the patient is returning for a recheck, medication adjustments, or further diagnostic testing related to the initial toxic effect.

• Ensure documentation clearly specifies "assault" as the intent of the ant venom exposure.
• Verify that the encounter is for follow-up care, not the initial treatment, to justify the "D" seventh character.
• Differentiate from accidental exposures (e.g., W57.-) or self-harm (e.g., X71.-).