ICD-9-CM procedure code (retired)
34.26 — Open mediastinal biopsy
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 34.26
34.26 is an ICD-9-CM procedure code for open mediastinal biopsy. 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 0W9C0ZX (Drainage of Mediastinum, Open Approach, Diagnostic) and 0WBC0ZX (Excision of Mediastinum, Open Approach, Diagnostic). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
Common questions about 34.26
What is the ICD-10 code for ICD-9 34.26?
- The GEMs map 34.26 to ICD-10-PCS 0W9C0ZX and 0WBC0ZX.
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.