ICD-9-CM procedure code (retired)
34.22 — Mediastinoscopy
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 34.22
34.22 is an ICD-9-CM procedure code for Mediastinoscopy. 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 0WJC4ZZ (Inspection of Mediastinum, Percutaneous Endoscopic Approach) and 0WJD4ZZ (Inspection of Pericardial Cavity, Percutaneous Endoscopic Approach). 1 of them are approximate matches.
ICD-10-PCS equivalents
Common questions about 34.22
What is the ICD-10 code for ICD-9 34.22?
- The GEMs map 34.22 to ICD-10-PCS 0WJC4ZZ and 0WJD4ZZ.
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.