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ICD-9-CM procedure code (retired)

55.31 — Marsupialization of kidney lesion

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 55.31

55.31 is an ICD-9-CM procedure code for marsupialization of kidney lesion. 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 20 ICD-10-PCS codes, such as 0T900ZZ (Drainage of Right Kidney, Open Approach), 0T903ZZ (Drainage of Right Kidney, Percutaneous Approach) and 0T904ZZ (Drainage of Right Kidney, Percutaneous Endoscopic Approach). All of these are approximate matches, so review the record to pick the right one.

ICD-10-PCS equivalents

Common questions about 55.31

What is the ICD-10 code for ICD-9 55.31?

The GEMs map 55.31 to ICD-10-PCS 0T900ZZ, 0T903ZZ, 0T904ZZ, 0T907ZZ, 0T908ZZ, 0T910ZZ and 14 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.