Z77.121
Billable codeContact with and (suspected) exposure to harmful algae and algae toxins
The ICD-10 code for contact with and (suspected) exposure to harmful algae and algae toxins is Z77.121.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- 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
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Z77.120Contact with and (suspected) exposure to mold (toxic)
- Z77.122Contact with and (suspected) exposure to noise
- Z77.123Contact with and (suspected) exposure to radon and other naturally occurring radiation
- Z77.128Contact with and (suspected) exposure to other hazards in the physical environment
- Z77.121Contact with and (suspected) exposure to harmful algae and algae toxins
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- V8732Approximate match
Associated MS-DRGs
Z77.121 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.