ICD-9-CM procedure code (retired)
77.66 — Local excision of lesion or tissue 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 77.66
77.66 is an ICD-9-CM procedure code for local excision of lesion or tissue 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 0Q5D0ZZ (Destruction of Right Patella, Open Approach), 0Q5D3ZZ (Destruction of Right Patella, Percutaneous Approach) and 0Q5D4ZZ (Destruction of Right Patella, Percutaneous Endoscopic Approach). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 0Q5D0ZZDestruction of Right Patella, Open Approachapproximate
- 0Q5D3ZZDestruction of Right Patella, Percutaneous Approachapproximate
- 0Q5D4ZZDestruction of Right Patella, Percutaneous Endoscopic Approachapproximate
- 0Q5F0ZZDestruction of Left Patella, Open Approachapproximate
- 0Q5F3ZZDestruction of Left Patella, Percutaneous Approachapproximate
- 0Q5F4ZZDestruction of Left Patella, Percutaneous Endoscopic Approachapproximate
- 0QBD0ZZExcision of Right Patella, Open Approachapproximate
- 0QBD3ZZExcision of Right Patella, Percutaneous Approachapproximate
- 0QBD4ZZExcision of Right Patella, Percutaneous Endoscopic Approachapproximate
- 0QBF0ZZExcision of Left Patella, Open Approachapproximate
- 0QBF3ZZExcision of Left Patella, Percutaneous Approachapproximate
- 0QBF4ZZExcision of Left Patella, Percutaneous Endoscopic Approachapproximate
Common questions about 77.66
What is the ICD-10 code for ICD-9 77.66?
- The GEMs map 77.66 to ICD-10-PCS 0Q5D0ZZ, 0Q5D3ZZ, 0Q5D4ZZ, 0Q5F0ZZ, 0Q5F3ZZ, 0Q5F4ZZ 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.