ICD-9-CM procedure code (retired)
35.42 — Creation of septal defect in heart
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 35.42
35.42 is an ICD-9-CM procedure code for creation of septal defect in heart. 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 02B50ZZ (Excision of Atrial Septum, Open Approach), 02B53ZZ (Excision of Atrial Septum, Percutaneous Approach) and 02B54ZZ (Excision of Atrial Septum, 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 35.42
What is the ICD-10 code for ICD-9 35.42?
- The GEMs map 35.42 to ICD-10-PCS 02B50ZZ, 02B53ZZ and 02B54ZZ.
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.