Z77.121
BillableContact with and (suspected) exposure to harmful algae and algae toxins
Z77.121 is the ICD-10-CM code for Contact with and (suspected) exposure to harmful algae and algae toxins. It is a billable, specific code valid for reimbursement.
Z00-Z99 Factors influencing health status and contact with health services
Includes
- •Contact with and (suspected) exposure to (harmful) algae bloom NOS
- •Contact with and (suspected) exposure to blue-green algae bloom
- •Contact with and (suspected) exposure to brown tide
- •Contact with and (suspected) exposure to cyanobacteria bloom
- •Contact with and (suspected) exposure to Florida red tide
- •Contact with and (suspected) exposure to pfiesteria piscicida
- •Contact with and (suspected) exposure to red tide
Frequently asked questions
- What is ICD-10 code Z77.121?
- Z77.121 is the ICD-10-CM code for "Contact with and (suspected) exposure to harmful algae and algae toxins". It falls under Z00-Z99 Factors influencing health status and contact with health services.
- Is Z77.121 a billable code?
- Yes — Z77.121 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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