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T65.82

Non-billable

Toxic effect of harmful algae and algae toxins

T65.82 is the ICD-10-CM code for Toxic effect of harmful algae and algae toxins. It is a non-billable category code — use a more specific child code such as T65.821 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
T65.8
Subcodes
4
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Includes

  • •Toxic effect of (harmful) algae bloom NOS
  • •Toxic effect of blue-green algae bloom
  • •Toxic effect of brown tide
  • •Toxic effect of cyanobacteria bloom
  • •Toxic effect of Florida red tide
  • •Toxic effect of pfiesteria piscicida
  • •Toxic effect of red tide

Frequently asked questions

What is ICD-10 code T65.82?
T65.82 is the ICD-10-CM code for "Toxic effect of harmful algae and algae toxins". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T65.82 a billable code?
No — T65.82 is a non-billable header code. Use a more specific child code (such as T65.821) for billing.
What are the subcodes of T65.82?
T65.82 has 4 more specific child codes, including T65.821, T65.822, T65.823.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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