ICD-9-CM diagnosis code (retired)
E928.6 — Environmental exposure to harmful algae and toxins
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM E928.6
E928.6 is an ICD-9-CM diagnosis code for environmental exposure to harmful algae and toxins. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The GEMs don't map it to any ICD-10-CM code.
ICD-10-CM equivalents
No ICD-10 equivalent is mapped for this code.
Common questions about E928.6
What is the ICD-10 code for ICD-9 E928.6?
- There is no mapped ICD-10-CM equivalent.
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.