ICD-9-CM diagnosis code (retired)
993.4 — Effects of air pressure caused by explosion
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 993.4
993.4 is an ICD-9-CM diagnosis code for effects of air pressure caused by explosion. 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, T70.4XXA (Effects of high-pressure fluids, initial encounter). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- T70.4XXAEffects of high-pressure fluids, initial encounterapproximate
Common questions about 993.4
What is the ICD-10 code for ICD-9 993.4?
- The GEMs map 993.4 to ICD-10-CM T70.4XXA.
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.