ICD-9-CM procedure code (retired)
99.79 — Other therapeutic apheresis
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 99.79
99.79 is an ICD-9-CM procedure code for other therapeutic apheresis. 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 6A550ZT (Pheresis of Cord Blood Stem Cells, Single) and 6A550ZV (Pheresis of Hematopoietic Stem Cells, Single). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
Common questions about 99.79
What is the ICD-10 code for ICD-9 99.79?
- The GEMs map 99.79 to ICD-10-PCS 6A550ZT and 6A550ZV.
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.