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ICD-9-CM procedure code (retired)

56.91 — Dilation of ureteral meatus

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 56.91

56.91 is an ICD-9-CM procedure code for dilation of ureteral meatus. 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 0T767ZZ (Dilation of Right Ureter, Via Natural or Artificial Opening), 0T768ZZ (Dilation of Right Ureter, Via Natural or Artificial Opening Endoscopic) and 0T777ZZ (Dilation of Left Ureter, Via Natural or Artificial Opening). All of these are approximate matches, so review the record to pick the right one.

ICD-10-PCS equivalents

Common questions about 56.91

What is the ICD-10 code for ICD-9 56.91?

The GEMs map 56.91 to ICD-10-PCS 0T767ZZ, 0T768ZZ, 0T777ZZ, 0T778ZZ, 0T787ZZ and 0T788ZZ.

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.