ICD-9-CM diagnosis code (retired)
E909.4 — Tidalwave caused by earthquake
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 E909.4
E909.4 is an ICD-9-CM diagnosis code for Tidalwave caused by earthquake. 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, X37.41XA (Tidal wave due to earthquake or volcanic eruption, initial encounter). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- X37.41XATidal wave due to earthquake or volcanic eruption, initial encounterapproximate
Common questions about E909.4
What is the ICD-10 code for ICD-9 E909.4?
- The GEMs map E909.4 to ICD-10-CM X37.41XA.
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.