Z77.121
Z77.121: Contact with and (suspected) exposure to harmful algae and algae toxins
Billable / specific codeICD-10-CMPOA exempt
Z77.121 is a billable, specific ICD-10-CM code for contact with and (suspected) exposure to harmful algae and algae toxins. It is valid for submission on a claim.
Check Z77.121 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- 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
Excludes2 inherited from the categories above Z77.121
Not part of this code, but both may be coded when both are present.
Written on Z77: Other contact with and (suspected) exposures hazardous to health
- contact with and (suspected) exposure to communicable diseases (Z20.-)
- exposure to (parental) (environmental) tobacco smoke in the perinatal period (P96.81)
- newborn affected by noxious substances transmitted via placenta or breast milk (P04.-)
- occupational exposure to risk factors (Z57.-)
- retained foreign body (Z18.-)
- retained foreign body fully removed (Z87.821)
- toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
Other codes that can never be billed with Z77.121
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Contact›algae and algae toxins
- Contact›algae bloom
- Contact›blue-green algae bloom
- Contact›brown tide
- Contact›cyanobacteria bloom
- Contact›pfiesteria piscicida
- Contact›red tide(Florida)
- Exposure›algae and algae toxins
- Exposure›algae bloom
- Exposure›blue-green algae bloom
- Exposure›brown tide
- Exposure›cyanobacteria bloom
Code history
Unchanged in every release from FY2024 to FY2027.