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ICD-9-CM procedure code (retired)

37.66 — Insertion of implantable heart assist system

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 37.66

37.66 is an ICD-9-CM procedure code for insertion of implantable heart assist system. 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 3 ICD-10-PCS codes, such as 02HA0QZ (Insertion of Implantable Heart Assist System into Heart, Open Approach), 02HA3QZ (Insertion of Implantable Heart Assist System into Heart, Percutaneous Approach) and 02HA4QZ (Insertion of Implantable Heart Assist System into Heart, Percutaneous Endoscopic Approach). All of these are approximate matches, so review the record to pick the right one.

ICD-10-PCS equivalents

Common questions about 37.66

What is the ICD-10 code for ICD-9 37.66?

The GEMs map 37.66 to ICD-10-PCS 02HA0QZ, 02HA3QZ and 02HA4QZ.

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.