ICD-9-CM procedure code (retired)
33.28 — Open biopsy of lung
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 33.28
33.28 is an ICD-9-CM procedure code for open biopsy of lung. 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 6 ICD-10-PCS codes, such as 0B9K0ZX (Drainage of Right Lung, Open Approach, Diagnostic), 0B9L0ZX (Drainage of Left Lung, Open Approach, Diagnostic) and 0B9M0ZX (Drainage of Bilateral Lungs, Open Approach, Diagnostic). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 0B9K0ZXDrainage of Right Lung, Open Approach, Diagnosticapproximate
- 0B9L0ZXDrainage of Left Lung, Open Approach, Diagnosticapproximate
- 0B9M0ZXDrainage of Bilateral Lungs, Open Approach, Diagnosticapproximate
- 0BBK0ZXExcision of Right Lung, Open Approach, Diagnosticapproximate
- 0BBL0ZXExcision of Left Lung, Open Approach, Diagnosticapproximate
- 0BBM0ZXExcision of Bilateral Lungs, Open Approach, Diagnosticapproximate
Common questions about 33.28
What is the ICD-10 code for ICD-9 33.28?
- The GEMs map 33.28 to ICD-10-PCS 0B9K0ZX, 0B9L0ZX, 0B9M0ZX, 0BBK0ZX, 0BBL0ZX and 0BBM0ZX.
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.