ICD-9-CM diagnosis code (retired)
E947.9 — Unspecified drug or medicinal substance causing adverse effects in therapeutic use
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 E947.9
E947.9 is an ICD-9-CM diagnosis code for unspecified drug or medicinal substance causing adverse effects in therapeutic use. 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 E947.9
What is the ICD-10 code for ICD-9 E947.9?
- 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.