ICD-9-CM diagnosis code (retired)
993.3 — Caisson disease
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 993.3
993.3 is an ICD-9-CM diagnosis code for Caisson disease. 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, T70.3XXA (Caisson disease [decompression sickness], initial encounter). The match is approximate, so confirm it against the record.
ICD-10-CM equivalents
- T70.3XXACaisson disease [decompression sickness], initial encounterapproximate
Common questions about 993.3
What is the ICD-10 code for ICD-9 993.3?
- The GEMs map 993.3 to ICD-10-CM T70.3XXA.
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.