ICD-9-CM procedure code (retired)
34.1 — Incision of mediastinum
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 34.1
34.1 is an ICD-9-CM procedure code for incision of mediastinum. 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 7 ICD-10-PCS codes, such as 0W9C00Z (Drainage of Mediastinum with Drainage Device, Open Approach), 0W9C0ZZ (Drainage of Mediastinum, Open Approach) and 0W9C40Z (Drainage of Mediastinum with Drainage Device, Percutaneous Endoscopic Approach). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 0W9C00ZDrainage of Mediastinum with Drainage Device, Open Approachapproximate
- 0W9C0ZZDrainage of Mediastinum, Open Approachapproximate
- 0W9C40ZDrainage of Mediastinum with Drainage Device, Percutaneous Endoscopic Approachapproximate
- 0W9C4ZZDrainage of Mediastinum, Percutaneous Endoscopic Approachapproximate
- 0WCC0ZZExtirpation of Matter from Mediastinum, Open Approachapproximate
- 0WCC3ZZExtirpation of Matter from Mediastinum, Percutaneous Approachapproximate
- 0WCC4ZZExtirpation of Matter from Mediastinum, Percutaneous Endoscopic Approachapproximate
Common questions about 34.1
What is the ICD-10 code for ICD-9 34.1?
- The GEMs map 34.1 to ICD-10-PCS 0W9C00Z, 0W9C0ZZ, 0W9C40Z, 0W9C4ZZ, 0WCC0ZZ, 0WCC3ZZ and 1 more.
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.