ICD-9-CM procedure code (retired)
93.98 — Other control of atmospheric pressure and composition
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-PCS equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 93.98
93.98 is an ICD-9-CM procedure code for other control of atmospheric pressure and composition. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-PCS took over.
The CMS General Equivalence Mappings translate it to 2 ICD-10-PCS codes, such as 6A0Z0ZZ (Atmospheric Control, Single) and 6A0Z1ZZ (Atmospheric Control, Multiple). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
Common questions about 93.98
What is the ICD-10 code for ICD-9 93.98?
- The GEMs map 93.98 to ICD-10-PCS 6A0Z0ZZ and 6A0Z1ZZ.
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.