ICD-9-CM diagnosis code (retired)
429.4 — Functional disturbances following cardiac surgery
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 429.4
429.4 is an ICD-9-CM diagnosis code for functional disturbances following cardiac surgery. 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 4 ICD-10-CM codes, such as I97.0 (Postcardiotomy syndrome), I97.110 (Postprocedural cardiac insufficiency following cardiac surgery) and I97.130 (Postprocedural heart failure following cardiac surgery). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
Common questions about 429.4
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.