ICD-9-CM procedure code (retired)
55.11 — Pyelotomy
About ICD-9-CM 55.11
55.11 is an ICD-9-CM procedure code for Pyelotomy. 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 0T937ZZ (Drainage of Right Kidney Pelvis, Via Natural or Artificial Opening), 0T938ZZ (Drainage of Right Kidney Pelvis, Via Natural or Artificial Opening Endoscopic) and 0T947ZZ (Drainage of Left Kidney Pelvis, Via Natural or Artificial Opening). All of these are approximate matches, so review the record to pick the right one.
ICD-10-PCS equivalents
- 0T937ZZDrainage of Right Kidney Pelvis, Via Natural or Artificial Openingapproximate
- 0T938ZZDrainage of Right Kidney Pelvis, Via Natural or Artificial Opening Endoscopicapproximate
- 0T947ZZDrainage of Left Kidney Pelvis, Via Natural or Artificial Openingapproximate
- 0T948ZZDrainage of Left Kidney Pelvis, Via Natural or Artificial Opening Endoscopicapproximate
- 0TC30ZZExtirpation of Matter from Right Kidney Pelvis, Open Approachapproximate
- 0TC40ZZExtirpation of Matter from Left Kidney Pelvis, Open Approachapproximate
Common questions about 55.11
What is the ICD-10 code for ICD-9 55.11?
- The GEMs map 55.11 to ICD-10-PCS 0T937ZZ, 0T938ZZ, 0T947ZZ, 0T948ZZ, 0TC30ZZ and 0TC40ZZ.
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.