ICD-9-CM procedure code (retired)
77.46 — Biopsy of bone, patella
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 77.46
77.46 is an ICD-9-CM procedure code for biopsy of bone, patella. 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 12 ICD-10-PCS codes, such as 0Q9D0ZX (Drainage of Right Patella, Open Approach, Diagnostic), 0Q9D3ZX (Drainage of Right Patella, Percutaneous Approach, Diagnostic) and 0Q9D4ZX (Drainage of Right Patella, Percutaneous Endoscopic Approach, Diagnostic). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 0Q9D0ZXDrainage of Right Patella, Open Approach, Diagnosticapproximate
- 0Q9D3ZXDrainage of Right Patella, Percutaneous Approach, Diagnosticapproximate
- 0Q9D4ZXDrainage of Right Patella, Percutaneous Endoscopic Approach, Diagnosticapproximate
- 0Q9F0ZXDrainage of Left Patella, Open Approach, Diagnosticapproximate
- 0Q9F3ZXDrainage of Left Patella, Percutaneous Approach, Diagnosticapproximate
- 0Q9F4ZXDrainage of Left Patella, Percutaneous Endoscopic Approach, Diagnosticapproximate
- 0QBD0ZXExcision of Right Patella, Open Approach, Diagnosticapproximate
- 0QBD3ZXExcision of Right Patella, Percutaneous Approach, Diagnosticapproximate
- 0QBD4ZXExcision of Right Patella, Percutaneous Endoscopic Approach, Diagnosticapproximate
- 0QBF0ZXExcision of Left Patella, Open Approach, Diagnosticapproximate
- 0QBF3ZXExcision of Left Patella, Percutaneous Approach, Diagnosticapproximate
- 0QBF4ZXExcision of Left Patella, Percutaneous Endoscopic Approach, Diagnosticapproximate
Common questions about 77.46
What is the ICD-10 code for ICD-9 77.46?
- The GEMs map 77.46 to ICD-10-PCS 0Q9D0ZX, 0Q9D3ZX, 0Q9D4ZX, 0Q9F0ZX, 0Q9F3ZX, 0Q9F4ZX and 6 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.