ICD-10 CM Code T65.821
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T65 Toxic effect of other and unspecified substances
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T65.8 Toxic effect of other specified substances
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T65.82 Toxic effect of harmful algae and algae toxins
T65.821
Toxic effect of harmful algae and algae toxins, accidental (unintentional)
Inclusion Term
- Toxic effect of harmful algae and algae toxins NOS
- 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
7th Character
- The appropriate 7th character is to be added to each code from category T65
- A - initial encounter
- D - subsequent encounter
- S - sequela
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