ICD-10-CM Diagnosis Code (2025)
Official Description for T65.821
Toxic effect of harmful algae and algae toxins, accidental (unintentional)
Coding Notes & Guidelines for T65.821
Toxic effect of harmful algae and algae toxins NOS
Parent Code (Less Specific):
About ICD-10-CM Code T65.821 (Toxic effect of harmful algae and algae toxins)
ICD-10-CM code T65.821 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T65.821 became effective on October 1, 2024.
This page provides detailed information about T65.821 - Toxic effect of harmful algae and algae toxins, accidental (unintentional). It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Toxic effect of harmful algae and algae toxins related to accidental.