ICD-10 Diagnosis Code Z77.120

Contact with and (suspected) exposure to mold (toxic)

Diagnosis Code Z77.120

ICD-10: Z77.120
Short Description: Contact with and (suspected) exposure to mold (toxic)
Long Description: Contact with and (suspected) exposure to mold (toxic)
This is the 2018 version of the ICD-10-CM diagnosis code Z77.120

Valid for Submission
The code Z77.120 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
      • Oth contact w and (suspected) exposures hazardous to health (Z77)

Information for Patients


Also called: Fungi

Molds are fungi that can be found both outdoors and indoors. They grow best in warm, damp and humid conditions. If you have damp or wet spots in your house, you will probably get mold.

Molds can cause health problems. Inhaling or touching mold or mold spores may cause allergic reactions or asthma attacks in sensitive people. Molds can cause fungal infections. In addition, mold exposure may irritate your eyes, skin, nose, throat, and lungs.

Centers for Disease Control and Prevention

  • Aflatoxin (Medical Encyclopedia)
  • Allergies, asthma, and molds (Medical Encyclopedia)
  • Hypersensitivity pneumonitis (Medical Encyclopedia)

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