T65.821D
BillableToxic effect of harmful algae and algae toxins, accidental (unintentional), subsequent encounter
T65.821D is the ICD-10-CM code for Toxic effect of harmful algae and algae toxins, accidental (unintentional), subsequent encounter. It is a billable, specific code valid for reimbursement.
S00-T88 Injury, poisoning and certain other consequences of external causes
No additional coding notes for this code.
Frequently asked questions
- What is ICD-10 code T65.821D?
- T65.821D is the ICD-10-CM code for "Toxic effect of harmful algae and algae toxins, accidental (unintentional), subsequent encounter". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
- Is T65.821D a billable code?
- Yes — T65.821D is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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