Z77.123
Billable codeContact with and (suspected) exposure to radon and other naturally occurring radiation
The ICD-10 code for contact with and (suspected) exposure to radon and other naturally occurring radiation is Z77.123.
Clinical notes
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)
- Z77.121Contact with and (suspected) exposure to harmful algae and algae toxins
- Z77.122Contact with and (suspected) exposure to noise
- Z77.128Contact with and (suspected) exposure to other hazards in the physical environment
- Z77.123Contact with and (suspected) exposure to radon and other naturally occurring radiation
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- V1589Approximate match
Associated MS-DRGs
Z77.123 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.