ICD-9-CM diagnosis code (retired)
E873.6 — Nonadministration of necessary drug or medicinal substance
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 E873.6
E873.6 is an ICD-9-CM diagnosis code for nonadministration of necessary drug or medicinal substance. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to one ICD-10-CM code, Y63.6 (Underdosing and nonadministration of necessary drug, medicament or biological substance). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- Y63.6Underdosing and nonadministration of necessary drug, medicament or biological substanceapproximate
Common questions about E873.6
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.